Feature:1. [BT 5.3] Adopting advanced BT 5.3 chip, the earbuds provide one-step pairing, faster transmission speed, more stable connection and lower power consumption.2. [Easy Pairing] After first pairing, it will turn on automatically and match quickly when you take it out again, simple and fast.3. [Smart Touch-Control] Various complicated operations can be done easily, such as voice assistant wakening, volume and music control, etc.4. [Premium Audio Performance] offers 8D surround sound quality and powerful bass with graphene bass disphragm as well as high-frequency technology.5. [Large Capacity Battery] 200 mAh charging box provides up to 3-4 hours playtime and 3-4 hours call time after a single full charge.6. [Comfortable Wear] With ergonomic design,the earphones fit well the ear canal and reduce ears pressure,ensuring in-ear wear comfort.7. [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.8. [Universal Compatibility] Widely compatible with iOS and Android systems.Specification:1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 Normal0Model:SM02Material: ABSColor: BlackBT version: BT5.3Headset battery:30mAhCharging box battery:200mAhTransmission distance: 10MTalk time:3-4 HoursPlayback time:3-4 HoursStandby time:150-200 HoursCharging time: 1-2 HoursBT protocol: BT5.3Waterproof: IPX4Item weight:56g / 1.97ozPackage size:10.5 * 6.3 *2.8cm / 4.13 * 2.48 * 1.1inchPackage weight:110g / 3.88ozPackage List:1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 Normal0