The Awei T3 True Wireless Bluetooth Earphones have been designed and manufactured to satisfy your needs, with its ergonomic design and ear protection technology, of both elegant and noble appearance. It has been made ultra-light weight for all day comfortable wearing, featuring an intelligent in ear design that effectively blocks the surrounding noise, giving you an undisturbed music experience. The advanced Bluetooth chip ensures high sensitivity and fast response Application: Running, Sport, Working Music Time: 1.6h Standby time: 150h Talk time: 2h - Dimensions: - Package weight: 0.13 kg Compatible with: All Bluetooth phones and music devices Connecting interface: Micro USB Connectivity: Wireless Frequency response: 20-20000Hz Impedance: 16ohms ± 15 percent Sensitivity: 90dB±3dB What's in the box Package Contents: 1 x Pair of Earphones, 1 x USB Cable, 1 x Charging Dock ( 480mAh ), 2 x Pair of Standby Eartips