Features:BT 5.2 technology ensures higher data transfer speed, more stable and fast connection, and lower power consumption.True wireless dual-ear design left, and right earphone channels are separated. It can be used solely (regardless of master and slave) or in pairs.Auto power on and fast pairing between left and right earbuds once opening the charging case lid. Easy and quick to pair with BT-enabled audio devices.Built-in Mic on both earbuds with ENC call noise reduction, effectively suppressing ambient noise, delivers clearer talking sound.Touch control design, no more pressure on your ears. Easy to control music and calls and activate voice assistant.A 300mAh charging case can charge and store the earbuds. 30mAh battery in each earbud ensures 4-5 hours of music time.Specifications:Brand Name: LenovoModel Number: LP10BT Version: 5.2Transmitting Distance: up to 10m (no obstacle)Drive Diameter: 13mmFrequency Range: 20-20KHzSensitivity: 107dB±3dBImpedance: 32Waterproof Rate: IPX5Charging Case Battery Capacity: 3.7V 300mAhEarbuds Battery Capacity (Each): 3.7V 30mAhMusic Play Time: 4-5 hours (depends on music volume)Charging Time: about 1.5 hoursCharging Port: Type-CPackage Size: 15*10*5cm/5.90*3.93*1.96inPackage Weight: 150g/5.29ozPackage List:1 * Pair of Earbuds1 * Charging Case1 * Type-C Charging Cable1 * User Manual (English/Chinese) Return Policy:7-Days Return (Change of mind isn't applicable)No-warranty