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Sony WI-C400 Wireless In-Ear Neckband Headphones | Open Box

2.09 out of 5 based on 22 customer ratings
(22 customer reviews )

In stock

  • 20 Hour Battery life
    Battery last hours not minutes allowing you to go hours enjoying your favorite music thanks to the 20 hour battery life.

  • NFC & Bluetooth
    Cut the cords and enjoy listening to your favorite songs through wireless bluetooth connection to compatible devices. Allows you to seamlessly connect your phone without a complicated connection setup like other headphones.

“Open box – meaning they are returned items or shelf pulled item. These are brand new never used but some original packages of the headphones will show a slightly damage distressed box.”

“100% guarantee – each headphones have been approved through the Amax Inspection Department and have gone through countless hours of testing to make sure they 100% fully work. If you have any questions leave it in the question tab or if any problems arise contact us “here.

$ 20.99 $ 56.99

In stock

$ 35.98 for 2 item(s)

Relax your hands as the Sony WI-C400 was built to give you enjoyable listen experience. This wireless neckband headphone 9mm driver deliver high quality sounds of your music. The 20 hour battery life allow you to go hours of listening to your top 5 songs.

Sony WI-C400 Wireless In-Ear Neckband

Whats in the box?

Sony WI-C400 Wireless In-ear | Black |


  • 1x Sony Wi-c400
  • 1x Micro usb cable
  • Extra ear buds

Sony WI-C400 Wireless In-ear | Black |

NFC & Bluetooth
Cut the cords and enjoy listening to your favorite songs through wireless bluetooth connection to compatible devices. Allows you to seamlessly connect your phone without a complicated connection setup like other headphones.

Sony WI-C400 Wireless In-ear | Black |

20 Hour Battery life
Battery on the Sony WI-C400 Wireless In-Ear Neckband last hours not minutes allowing you to go hours enjoying your favorite music thanks to the 20 hour battery life.

Sony WI-C400 Wireless In-ear | Black |

Multi-function Remote
The control panel built in microphone helps you talk and answer calls hands free with out touching your connected device. Its also useful in allowing you to change, pause, fast forward or play songs.

Voice assistant capabilities
One touch of a button from the Wireless In-ear Neckband connects you to your devices voice assistant for help, directions and more.

Need a help making the best headphones decisions? Check out our Headphone Guide here


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Weight0.8 lbs
Dimensions8 × 8 × 1 in

Technical Specifications

ModelWi C400
Driver Unit9 mm
Frequency Response8Hz-22k Hz
Headphone TypeClosed, Dynamic
Wearing StyleSupraaural type
Connector TypePhone stereo 3.5mm


Effective RangeLine of sight approx.30ft (10m)
Bluetooth® TechnologyVersion 4.2
Frequency Range2.4GHz band (2.4000GHz-2.4835GHz)
Frequency Range(A2DP)8Hz – 20,000Hz (44.1kHz Sampling)
 InterfaceA2DP, AVRCP, HFP, HSP
Modulation MethodFHSS
Power OutputBluetooth power class2
Supported Audio Format(s)SBC, AAC
Supported Content ProtectionSCMS-T

 General Features

BatteriesDC3.7V : Built-in litium-ion rechargeable battery
Battery Charge MethodUSB
Battery Charge TimeApprox. 2.5 hours
Battery Indicator (Charge indication)Red LED
Battery Indicator (Working indication)Blue LED
Battery Life (Waiting Time)Max. 200h
Battery Life (Continuous communication time)Max. 20h
Battery Life (Continuous music playback time)Max. 8h
Volume ControlControl the volume from the Bluetooth Wireless Headphones.

General Feature (Microphone)

Direction of MicrophoneOmnidirectional Microphone
Effective Frequency of Microphone100Hz-4000Hz
Unit of MicrophoneElectric Condenser

Need a help making the best headphones decisions? Check out our Headphone Guide here

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Shipping, Exchange & Return Policy

Amax Marketplace

Shipping, Returns & Exchanges Policy

Thank you for shopping at Amax Marketplace.

To serve you better, Amax Marketplace will begin to process your order immediately when you click the Submit Order Button.

1. Our Products

  1. a) Although we have made every effort to display the colors accurately, the images of the Products on our site are for illustrative purposes only.
  2. b) We cannot guarantee that your computer’s display of the colors accurately reflects the color of the Products, your Products may vary slightly from those images.

2. Processing Guidelines

  1. a) All Products on the site are subject to availability and payment being received before your order is processed.
  2. b) We will contact you if the Products you have ordered are out of stock, or if additional identification is needed for credit card verification.

3. Shipping and Tracking Number

  1. a) We ship to addresses located within the United States, and to most international destinations (except those where an embargo has been imposed).
  2. b) When you place your order, you will get an approximate delivery time based on the availability of your items and order processing time. Depending on your region, shipping charges and delivery date estimates will appear on the order page.
  3. c) Please note that the delivery dates stated on your order page are approximate and for guidance purposes only. Actual delivery dates may vary.
  4. d) Once your order is shipped, we will send you a tracking number through email. Please note that it may take up to 2 hours before the tracking number can be updated online.

4. International shipping and costs

  1. a) We aim to deliver United States based orders within 7 working days,and all international based orders within 14-21 working days, of your order being processed.
  2. b) Please note that International shipping charges do not include taxes or duties; please contact your local customs office to request details of these charges. We are unable to change your delivery address once an order has been dispatched.

5. International shipping policies

  1. a) If you order products from our site for delivery to an international destination, your order may be subject to import duties and taxes once a shipment reaches your country.
  2. b) You will be responsible for payment of any such import duties and taxes; We have no control over these charges and cannot predict what they may be. International orders may be subject to customs clearance procedures, which may cause delays beyond original delivery estimates.
  3. c) When ordering from us, you are considered the “importer of record” and must comply with all laws and regulations of the country in which you are receiving the goods. We will not be liable or responsible if you break any such law.

6. Inspection

  1. a) You are required to inspect the delivered Products once you receive you order and ensure that the Products are in “as expected” condition.
  2. b) In the event they are not in an “as expected” condition, please Contact Us as soon as possible, with all necessary information, including photographic proof.

7. Returns and Exchanges

7.1 Returns

We accept returns on most Products within 60 daysof receipt, for Products that HAVE NOT BEEN OPENED, USED or ALTERED, and with ALL tags and/or stickers attached.

7.2 Exchanges

  1. a) All exchange notices must be received to our office within 60 days of receiving your order. We will do our best to fulfill your exchange request.
  2. b) If your desired replacement item is no longer available we will help you find another item you like, or process a refund if the item falls within our return policy.

7.3 Returns Procedure

  1. a) If you want to return or exchange any Product(s), you must take reasonable care of the Product(s) and they should be returned unopened, unused and in their original condition from the original delivery address. We recommend that you ask the shipping carrier for proof of posting and insure the return shipment, as you are under a duty to take reasonable care of the goods and will be liable for damage to them until we receive them at our warehouse.
  2. b) In case of dispute, we also recommend you retain proof of sending. Without this, we cannot process an exchange if we do not receive the returned items. Please Contact Us so we may provide you with a Return Address.
  3. c) All returns must be received by our office within 60 daysof receiving your order. Please choose your shipping method accordingly. You are responsible for all costs incurred in returning the item to us.
  4. d) For Returns, we will be able to process your refund within5 days of us receiving the returned Product. Refunds will be issued through the original method of payment. Please note that original shipping charges are non-refundable.
  5. e) For Exchanges, we will ship to you the desired Product,within 30 daysof us receiving the returned Product, as per our Shipping policy.

8. Shipping Errors / Damaged Products

  1. a) We are committed to selling only high-quality Products. To that end, we employ several quality checks before a Product is shipped.
  2. b) If you have received a wrong or damaged Product, please Contact Us within 5 daysof receiving the order to be eligible for a free exchange with a free replacement Product or a full refund.
  3. c) In the case of a refund, we will be able to issue your full refund immediatelyafter we receive the damaged or defective Product. Refunds will be issued through the original method of payment.
  4. d) For Replacements, we will ship you a new replacement Product immediatelyafter we receive the damaged or defective Product, as per our Shipping policy.

9. Events outside our control

We will not be liable or responsible for any failure to perform, or delay in performance of, any of our obligations if caused by events outside our reasonable control, including (but not restricted to) fire, flood, severe weather, explosion, war, act of terrorism, industrial dispute, or acts of local or central Government or other competent authorities.

10. Entire agreement

These terms and conditions and other notices elsewhere on our website contain the whole agreement between us and you relating to the supply of Products.

11. Contact Us

If you have any questions concerning our Shipping and Returns Policy, please feel free to Contact Us.


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Customers' review

Rated 2.09 out of 5 stars
22 reviews
5 stars 0 0 %
4 stars 3 13 %
3 stars 3 13 %
2 stars 9 40 %
1 star 7 31 %

22 reviews for Sony WI-C400 Wireless In-Ear Neckband Headphones | Open Box

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