[BT 5.2] Adopting advanced BT 5.2 chip, the earbuds provide one-step pairing, faster transmission speed, more stable connection and lower power consumption. [Easy Pairing] After first pairing, it will turn on automatically and match quickly when you take it out again, simple and fast. [Smart Touch-Control] Various complicated operations can be done easily, such as voice assistant wakening, volume and music control, etc. [Premium Audio Performance] offers 8D surround sound quality and powerful bass with graphene bass disphragm as well as high-frequency technology. [Large Capacity Battery] 400 mAh charging Box provides up to 6-8hour playtime and 6 hour call time after a single full charge.It can also charge the mobile phone for emergency. [Comfortable Wear]With ergonomic design,the earphones fit well the ear canal and reduce ears pressure,ensuring in-ear wear comfort. [More Practical Features] Life waterproof and sweat proof allow you to deal with daily water activities easily and enjoy sports freely.The earbuds are single or double free to use. [Universal Compatibility] Widely compatible with iOS and Android systems. Model: TW01 Material: ABS Color: Black / White BT Version: 5.2 Earphone Battery: 50mAh * 2 Charging Box Battery: 400mAh Transmission Distance: 10m Call Time: 6 hours Play Time: 6-8 hours Standby Time: 150 hours Charging Time: 1 hour Item Weight: 32g / 1.12oz Package Size: 13 * 8.6 * 3.1cm / 5.11 * 3.38 * 1.22in Package Weight: 86g / 3.03oz