Bluetooth v4.1 Wireless Headset Rechargeable Earphones with Mic Black Berlin

ENJOY WIRELESS MOBILITY
Listen to your music and make handsfree phone calls
Works with any Bluetooth enabled laptop or mobile phone
Long battery life

Bluetooth stereo headphones with built-in microphone
Advanced DSP noise reduction technology
Up to 250 hours of standby time and 10 hours of listening time
Automatically mutes your music in case of incoming calls
Multifunction button volume control and low battery indication
Voice prompt status updates (power on/off pairing incoming call)
Comfortable ear cushions and adjustable headband

Interface: Bluetooth v.4.1
Transmitting power: max 5 dB
Supported profiles: HSP HFP A2DP and AVRCP
Rechargeable 250 mAh Li-ion battery
Recharging time: 2 hrs
Operation distance: up to 10 m in the open air
Speaker diameter: 40 mm
Speaker frequency response: 20 Hz - 20000 Hz
Sensitivity: 93 dB
Impedance: 32 Ohm
Microphone: 360 degrees omni-directional
Input voltage: 5 V DC
Power consumption: 3.7 V DC up to 45 mA
Dimensions: 170 x 175 x 70 mm (L x W x D)
USB charging cable length: 1 m