Features: Built with BT5.0 version, it offers high data transfer speed, stable connection and low power consumption. Multi-functional Tou-ch control let you take calls, switch songs, or control volume simply by touching these in-ear wireless headphones all without taking your smart phones out of your pocket. Built-in high sensitivity mic, it provides high-quality clear sound and great talking experience to you. Wireless dual ear design, left and right ear channel separation. You can use the headset solely, or used them in pairs. 35mAh battery in each headphone ensures 2-3 hours of working time. Charged automatically in the 300mAh charging case which enables dual headsets charging for about 3 times.Specifications: Model Number: L8 BT Version: BT 5.0 Frequency Range: 20-20000Hz Sensitivity: 92+/-3dB Impedance: 32 Ohm Transmission Distance: 10m/33ft Charging Case Capacity: 3.7V 300mAh Earphone Battery Capacity: 2 * 3.7V 35mAh Working Time: about 2-3 hours Charging Time: about 1 hour Color: Black, White(Optional) Earphone Size: 4.5*2*0.6cm/1.77*0.79*0.24in Earphone Weight: 8g/0.28oz (Pair of Earbuds) Charging Case Size: 7*3*2cm/2.76*1.18*0.79in Charging Case Weight: 25g/0.88oz Package Size: 16 * 10 *4.5cm/6.30*3.94*1.77in Package Weight: 183g/6.46ozPackage List: 1* Pairs of Headphones 1* Charging Case 1* Charging Cable 1 * Cleaning Cloth 1* User Manual (English / Chinese)Product type: Wireless Headphones