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Amazon.com: COMICA BoomX-D PRO Wireless Lavalier Microphone System with 16GB Storage, Noise Canceling, Safety Audio Track, Lapel Lav Mic for DSLR ,

BoomX-D PRO,2.4G Dual-channel On-board Recording Wireless Microphone - Shenzhen Commlite Technology Co., Ltd.,

Comica Audio BoomX-D D2 Ultracompact 2-Person Digital Wireless Microphone System for Mirrorless/DSLR Cameras (2.4 GHz, Black),