SYNCO G4 2.4G Wireless Microphone System 200m ALL-IN-ONE for Camera Smartphone
Audio Input : 3.5 mm TRS Mic Input. Audio Output : 3.5 mm TRS Mic Output. 3.5 mm TRS Headphone Output. Battery Type : Built-in Lithium Battery, 90mAh. Form Factor : Built-in/External Mic. Wireless Transmission : Digital 2.4GHz.