Wireless Collar Clip Microphone Three-in-one Three Connector Mini Microphone 35 Hole

Bluetooth version: 4.1
Built-in battery capacity: 50mAh-100mAh (included)
Signal-to-noise ratio: ≥ 100dB
Frequency range: 20Hz-20KHz
Rated Power: 3
Rated Voltage: 5
Appearance size: 15mm
Battery life: 6-8h (included)
Radio head: Capacitor
With a built-in battery or not: Built-in battery