Sony Wireless Headphones Bluetooth Design with dedicated app for settings that allow you to customize the sound quality to your B Small WH-CH520

【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. With a good balance from highs to lows, you can enjoy natural and clear sounds from vocals and instruments. Furthermore, Sony's proprietary technology ``DSEE'' complements the high frequencies that tend to be lost in compressed sound sources, up to CD-quality sound, within the headphones. Plays compressed sound sources using streaming playback, MP3, Bluetooth transmission codecs, etc. with spacious and good sound. It is compatible with the dedicated app "Headphones Connect", and by using the "equalizer" that allows you to customize the sound quality to your preference, you can select from 8 types of presets such as "Relaxed" and "Bass Boost", or customize to your favorite equalizer settings. Adopts smooth, low-repulsion urethane foam ear pads with few wrinkles. The soft and comfortable ear pads are lightweight and comfortable to wear. Music playback is possible for up to 50 hours (*). Furthermore, it supports quick charging that allows for approximately 1.5 hours of playback (*) with a 3-minute charge (approximately 5.5 hours with a 10-minute charge). Hands-free calls (*) are possible with smartphones, iPhones, and PCs. *Smartphones, iPhones, and PCs must have Bluetooth functionality and support HFP or HSP. Depending on the software and environment you are using, it may not be compatible.