LUUCCO ProTalker S2 Digital Wireless Microphone

• Wireless Transmission : Digital 2.4GHz
• Built-in Microphone : Polar Pattern: Omnidirectional ; Frequency Range: 50Hz-20kHz
• Sensitivity : -32dB±15dB @ 1KHz
• Operation Range : 250m (820ft) (Line of Sight)
• Signal-to-Noise Ratio : >80dB
• Maximum SPL : 110dB SPL
• Overall Power Consumption : 3.7V/30mA
• Bit Depth : 16 bit
• Sampling Rate : 48 kHz
• Battery Capacity :  RX: 190 mAh ; TX: 190 mAh ; Charging Case: 1000 mAh.
• Operating Time : RX: 8H ; TX: 8H  ; Charging Case: Appr. 15 time charging for 2- TX and 11 RX
• Charging Time : RX: 2H ; TX: 2H 
• Charging Case : RX: 2H ; TX: 2H ; Charging Case : 2.5H
• Dimensions : RX: 5.2 x 2.9 x 1.1 cm (2x1.1 x 0.4 ") ; TX: 5.2 x 2.1 x 1.8 cm (2x0.8 x 0.7 ") ; Charging Case 7.9x3.1x 6.2 cm (3.1x 1.2 x2.4")
• Weight : RX: 11.2g (0.4 oz) , TX: 12.4g (0.4 oz) ; Charging Case 85.8g (3 oz)