Specification: - Color: Black - Play Time: 5-6 hours - Standby time: 360 hours - Charging time: 2 hours - Connecting interface : Micro USB - Application : Computer, Mobile Phone - Impedance : 16ohms - MIC Sensitivity : 42+3dB. - Operation Distance: 10M - Bluetooth Version: V4.1 - Weight (with package): 50 g - Function: Bluetooth, Microphone, Noise Cancelling - Battery Capacity: 135 MAh What's in the box 1 x Bluetooth Wireless Earphone