Bluetooth waterproof microphone for Walkie-Talkie (and smartphone)

Wireless Bluetooth Dual PTT Microphone up to 100 meters range! Features: Bluetooth version V3.1 Class1, supports HSP, HFP, A2DP, AVRCP, SPP Hands-free.
When connecting to Bluetooth enabled mobile phones, you can get hands-free call handling Answer/reject incoming calls, make calls, voice calls, last number dialing Supports full-duplex intercom up to 100 meters!
With DSP echo cancellation and noise reduction technology, clear voice quality is ensured in noisy environments.
Enjoy stereo music from mobile phone via A2DP and play, pause, forward and rewind music control via AVRCP PTT over cell phone (POC): Supports various POC apps such as Zello, Azetti, Eschat, Bper, etc.
Dual pairing function: it can connect two Bluetooth devices such as cell phone, two-way radio with Bluetooth adapter and GPS navigator at the same time Dual audio-merged listening function: you can listen to the merged audio from both connected devices simultaneously and speak separately to both.
High level of security and privacy, -only the user can hear the voices from both conversations Dual PTT (push to talk) function: Primary PTT and secondary PTT can be switched.
Two PTT buttons can control two Bluetooth devices separately Programmable via USB.
Easily set up the device and upgrade the firmware Waterproof design IP66. Long life Li-polymer battery