Retevis RB37 RB89 Wireless Walkie Talkie Speaker Microphone,Wireless 5.3 Shoulder Speaker Mic, Only for Ailunce HD2 Retevis RB37 RB89 RT29D 2 Way Radio, with 3.5mm Audio Jack (1 Pack)

Advanced Wireless 5.3 technology; Walkie Talkie Wireless Speaker Mic gets rid of cluttered cables, making it more comfortable and convenient; only compatible with RB89 RB37 RT29D Ailunce HD2; note: not compatible with other brands of walkie-talkies; not compatible with VTEC radio ^^ 1000mAh replaceable battery; Retevis Wireless Speaker Mic has a long battery life of 2-3 days ^^ 3.5 mm headphone jack; Retevis 2 Way Radio Wireless Speaker Mic provides you with a more private way of calling ^^ Type-c charging method; more convenient charging method ^^ 40mm large volume speaker Large volume and volume adjustment switch; adjust the volume; the sound quality is clearer