JBL EasySing Mics Wireless AI-powered Microphones

Specifications:
Dynamic range: 98 dBA @ 1 kHz
Signal -to -Noise: 59 dBA
THD: < 1% @ 94 dB SPL, 100 Hz - 10 kHz
Microphone head: 16 mm ECM
Transmitting power: < 10 dBm
Control and Connection Specifications
Carrier frequency: 2404 - 2478 MHz
Encryption: AES - 128
Frequency / Channel selection: Adaptive channel selection
Frequency response: 50 Hz - 15 kHz
Microphone dimensions (W x H x D): 45.5 x 224.5 x 42.7 mm
Microphone weight: 195 g 
Dongle dimensions (W x H x D): 24 x 45.4 x 15.6 mm
Dongle weight: 12 g
Package dimensions (W x H x D): 131 x 68 x 236 mm
Gross weight: 665 g
Microphone rechargeable battery: 240 mAh, 3.7 V Li-ion polymer battery
Microphone battery charge time: < 3.5 hours in off mode