Oy632 Bluetooth Headphones With Microphone Wireless Headset Noise Cancelling Head-mounted Headphone For Cell Phones Pc Tablet Home Office Black OY632 Bluetooth Headphones with Microphone Wireless Headset Noise Cancelling Head-mounted Headphone for Cell Phones PC Tablet Home Office Black Features: This headset adopts the latest BT 5.0 technology, fast connection and stable transmission. Made from high-grade ABS materials and soft protein ear cushions, provides with an ultra-lightweight fit. Light weight design and and adjusatble padded headband fits for different head sizes. Easy to use, You can easily control the music/calls with buttons on the headset(volume +/-, power on/off, answer/reject calls, switch songs). The rotatable microphone is able to accurately pick up the sound, you can freely adjust the angle of the microphone to make the sound clearer and louder. Noise cancelling microphone, pick up your voice exactly and block most noise from the surroundings. It can ensure you having a clear conversation even in noisy environment. Specifications: Type: Headset Material: ABS, Soft protein Color: Black BT Version: 5.0 Working distance: 10-30m Working voltage: 3.7V Charging voltage: 5V Battery capacity: 300mAh Charging time: 1-2 hours Loudspeaker size: 40mm Impedance: 32 Sensitivity: 1085 dB Frequency response range: 20-20000Hz Package Size: 22*16*7cm / 8.7*6.3*2.8in Package Weight: 180g / 6.3oz Package List: 1 * Headset 1 * USB Charging Cable 1 * User Manual