Sony Wireless Earphones Bluetooth up to 20 hours of continuous with 2017 blue WI-C400 compatible, playback, in-ear type, microphone, model, (WI-C400

--------------------------------------------------- 【Voltage Compatibility】 Our products are selected to support international voltage ranges (e.g. 100–240V). However, please make sure your local voltage is compatible before use, as incorrect voltage may still cause malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without appropriate voltage or equipment. --------------------------------------------------- When there is an incoming call on the paired smartphone, the neckband vibrates to notify you of the call. Hands-free calling supported Cable length is adjustable Achieves up to approximately 20 hours of long-lasting wireless listening. Easily control your smartphone or other player from your neck. No noise cancellation function Charging time: Approximately 4.5 hours Accessories: USB cable (approx. 50cm micro USB cable), eartips (hybrid eartips SS, S, M, L (2 of each)), warranty card, instruction manual, reference guide