Product Overview
1. Speaker size: 30mm
2. Impedance: 32
3. Sensitivity: 84dB (indoor) 93dB (outdoor)
4. Frequency range: 20-20KHz
5. Microphone size: 4.0x1.4mm
6. Microphone sensitivity: about -42dB
7. Directionality: omnidirectional
8. LED working voltage: DC5V
9. Working current: about 200mA
10. Headphone jack: 3.5mm 4Pin
11. Cable length: 1.5m
12. The volume limit function protects childrens hearing, with 3 pairs of creative earmuffs to enjoy the fun of DIY.
