Sony completely wireless earphones Bluetooth left and right separated 4GB 2018 model with microphone black WF-SP900 compatible, type, waterproof,

---------------------------------------------------------------------- 【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a 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 a transformer. ---------------------------------------------------------------------- Completely wireless earphones with high waterproof and dustproof performance and built-in 4GB memory that can be used in various situations. Equipped with 4GB of memory, you can enjoy approximately 920 songs with just the headphones themselves (in the case of mp3 128kbps) The antenna structure has been redesigned to achieve low latency and stable connections between left and right sides. The headphones have a built-in microphone that captures environmental sounds and human voices. Adopts a newly developed BA driver to achieve both sound quality and compactness. Earpiece attachment position can be adjusted to achieve a more personalized fit Comes with 3 sizes of arc supporters to increase mounting stability. Compatible with dedicated app “Headphones Connect” Compatible with the app “Music Center” for comfortable operation of music in the built-in memory Accessories Charging case, USB cable, hybrid earpiece, swimming earpiece, arc supporter, leash cord, technical manual, warranty, instruction manual