[Mono and binaural mode] The two earbuds can be used alone or in two channels, and each earphone can be paired independently. Both “L” and “R” can control play/pause/previous/next/volume up/volume down /answer/end/reject call. It's like you have two completely separate headphones. Connect to the same device to share music with your friends or use two headphones to enjoy stereo surround sound. [High-end metal charging case with patented independent power management technology] The exclusive patented independent power management technology allows you to separately charge the left and right earbuds separately for maximum use time. Place either or both earbuds into the station: one red LED indicates no power, one blue LED indicates full charge. The earbuds will charge automatically. [Mini ergonomic design and IPX7 protection] The textured surface, invisible in-ear design, soft sleeves and true wireless technology make these headphones cool, convenient and high-quality. Free your hands and your music: IPX7 protection resists rain and sweat with ease. The metallic charging station is stylish and pocket-sized, or can be carried in the hand so you can charge as you go. [Bluetooth 5.0 and deep stereo bass] The Bluetooth transmission communication speed reaches up to 48MBps from 15 metres away, thanks to the strong anti-interference technology. This means smoother, clearer conversations and no music cut-outs when you're on the move. The unique stereo design delivers high-quality sound so you can really feel the music. [W5s with intelligent charging case] The earbuds automatically charge when the case cover is closed, and the charging case is also rechargeable. W5s can be used for 6 hours per single full charge, and the charging box can charge the earbuds fully 3-4 times. That means a full 24 hours of music or talk time, or 100 hours on standby, with fast 1-hour charging.