We offer a wide variety of products, and the following precautions apply to some of them. Please note that they are listed for all products. 【Voltage Compatibility】Designed for Japanese voltage (90-110V). Using with a different voltage may cause malfunction. 【Plug Type】Japanese plugs (A or B type). Use a conversion adapter if needed. 【Transformers & Adapters】Transformers adjust voltage; adapters only change plug shape. Using an adapter without a transformer may damage the product. 【Liability】We are not responsible for damages caused by improper use, such as using the product without a transformer. Speaker structure that allows you to hear clearly - Two microphone full-range speaker units are placed upwards, allowing the sound to spread close to your ears and give you the experience of being surrounded by sound. Equipped with a passive radiator on the back, you can enjoy balanced and clear sound from calls to listening to music. Optimally controls the two microphones to accurately and clearly pick up your voice, delivering a clear voice to the other party even in noisy environments. It suppresses the unpleasant feedback and echoes that occur during online meetings, allowing for comfortable calls without audio interruption. Equipped with an easy-to-operate voice button Equipped with a microphone mute button that allows you to turn on the sound only when speaking, so you can easily turn the sound on and off from your neck. Equipped with volume up/down buttons, you can easily adjust the volume to the other party's voice using your neck. In addition, it is equipped with a play/stop button, so you can stop and stop playing music without using your smartphone or PC. You can also perform operations such as forwarding and reversing songs. It's so lightweight (113g) that you'll forget you're wearing it, so you won't get tired even if you wear it all day. Designed based on ergonomics to distribute the weight by considering the points of contact with the body. The open-ear style allows you to listen to online meetings, music, and TV without missing any surrounding sounds. Long-term use and daily waterproof performance Long lasting for 20 hours of continuous use. (Charging time 4H) Also supports quick charging. Can be used for 60 minutes after 10 minutes of charging. IPX4 compatible with drip-proof performance that is resistant to water drops and sweat. Easy connection Supports multi-point connection that allows you to connect two devices at the same time and receive calls or music. Accessories: USB-C cable