M20 Bluetooth headphone/headset is a high quality headphone,with which you can use to working and playing games, listening music. With it is wireless, you can use it convenient. .The latest version of A2DP1.2 and AVRCP1.0 profiles support .Supports Bluetooth Headset and Hands-free Profile(HFP 1.5) .RF Frequency Range: 2.402-2.480GHZ, 2.4G ISM band .Radio Performance: Receive Sensitivity of -90dBm, TX Power .Frequency Response: 20 Hz -20 KHz, Very high Signal to Noise Ratio (SNR):95 Db, Total Harmonic Distortion (THD):0.1% .3 Button design: MFB (Multi-Function Button), VOL+, VOL- .LED Indicator Status: Blue, Red .Rechargeable 400mAh Li-Polymer Battery .Micro USB Plug charging Port .Nominal charging time: About 3 hours .Talk time: Up to 15 hours .Standby time: Up to 250 hours
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