Features:   Up to 10 hours play time Up to 10 hours talk time Up to 360 hours standby time Less than 2.5 hours changing time Unique neck-strap design for easy carrying Ultra light weight for all day comfort Vibration Alert on call Easy magnetic earphone storage Noise reduction & Echo cancellation

Features:   Up to 10 hours play time Up to 10 hours talk time Up to 360 hours standby time Less than 2.5 hours changing time Unique neck-strap design for easy carrying Ultra light weight for all day comfort Vibration Alert on call Easy magnetic earphone storage Noise reduction & Echo cancellation   Specification: Changing voltage: MICRO USB 5V Working current: 25-30 mA Output power: 2x20mW   Bluetooth working range: 10M Frequency  range: 2.401-2.480GHz