1Made of highquality ABS materials, compact and lightweight, wearresistant and antifall. 2Highdefinition audio reception and transmission enable efficient communication. 3SOS function. Big PTT. Group switch. Wireless Microphone work for realptt, for zello. 4Simple and durable design with stable performance and long talk time. 5Handsfree radio use for maximum ease of use. Ergonomically designed for a comfortable feel. Item Type: BluetoothMicrophoneMaterial: ABSColor: As Pictures Shown Weight: Approx. 271/9.6ozBluetooth Version: 4.2Bluetooth Protocol:HFP / HSP / A2DP / AVRCP / SPPTransmission Range: 10m/32.8ftTransmitting Power:CLASS24dbmSensitivity:80dBm <0.1BERAudio Performance: forSBC DecodingNoise Ratio: 75dBHorn Power:1W / 8R116dBLed Indicator: Blue/Green LED IndicatorHeadphone Jack: 3.5mm, PPT Headset is SupportedBattery Type: Polymer Lithium BatteryBattery Capacity:2000mA / 3.7V 1 xIntercom Bluetooth Microphone1 x Microphone Buckle1 x Power Supply1 x USB Cable1 x Manual 1.Builtin battery .2.The Bluetooth microphone is compatible for Android 5.1 F25 / G25 (not F22 / G22), T320 and for Android 6.0, for Android 7.0 and later, e.g. 3GW7, 4GW7Plus Zello 3. Non W7 / W7 + Emergency alert group switching is not available.