Earhanging public intercom 4G nationwide intercom Touch sensitive PTT Ear hook/collar clip dual-use 28-39 hours of battery life Type-c charging interface Built in 650mAh battery for longer battery life Faster and safer charging,longer lifespan Indoor microphone clearand loud sound quality clear and bright sound quality without delay Realistic presentation of original sound details Double wearing Earhook/collar clip dual-use Free choice of two wearing methods comfortable to wear without pressing on the ears, more intimate with ear contact! Tailored design Detachable back clip Easy to disassemble and not easily detached Lightweight design feels like one piece Packing List 1.host 2.Adapter 3.UsB line 4.Soft rubber eartips 5.Soft rubber ear hook 6.instructions 7.Backclip (optional) 8.Earphone cable (optional) Earhanging public intercom 4G nationwide intercom Touch sensitive PTT Ear hook/collar clip dual-use 28-39 hours of battery life Type-c charging interface Built in 650mAh battery for longer battery life Faster and safer charging,longer lifespan Indoor microphone clearand loud sound quality clear and bright sound quality without delay Realistic presentation of original sound details Double wearing Earhook/collar clip dual-use Free choice of two wearing methods comfortable to wear without pressing on the ears, more intimate with ear contact! Tailored design Detachable back clip Easy to disassemble and not easily detached Lightweight design feels like one piece