JBL Harman PartyBox Wireless Mic

Audio & Wireless Performance Carrier Frequency: 2404 MHz – 2478 MHz Wireless Connection: 2.4GHz Digital Signal Encryption: AES-128 Working Range: 30 meters / 100 feet System Latency: < 12 ms Frequency Response: 50 Hz – 15 kHz Dynamic Range: 100 dBA @ 1 kHz Signal-to-Noise: 59 dBA Total Harmonic Distortion (THD): < 1% @ 94dB SPL Hardware Specifications Microphone Caps: 16mm Electret Condenser Microphone (ECM) Polar Pattern: Cardioid (Unidirectional) Transmitting Power: < 10 dBm Receiver Max Output: < 1V RMS Battery & Power Microphone Battery: 600mAh, 3.7V Li-ion Dongle Battery: 700mAh, 3.7V Li-ion Microphone Playtime: Up to 20 hours Dongle Playtime: Up to 12 hours Charge Duration: < 2.5 hours from empty Fast Charging: 10-minute charge gives 2 hours use Dimensions & Build Microphone Size: 45.5 x 224.5 x 42.5 mm Microphone Weight: 270 grams / 0.6 lbs Dongle Size: 42 x 96.5 x 18 mm Dongle Weight: 43 grams / 0.095 lbs