Specification:
Item Type: Lavalier Microphone System
Material: ABS
Maximum Distance: 70m/76.6yd
Battery Capacity.
Transmitter 250mAh Lithium Battery, Receiver 250mAh Lithium Battery ( Included)
Endurance: About 7 Hours
Charging Power: 5V 200mA
RF Frequency: 2.4GHz
Transmitting Power: 14DB
Sound Gain: 0‑4 Levels
SNR: 97DB
Frequency Response Range: 20HZ to 14.5KHZ
Noise Reduction : 0 to 75Hz to 150Hz
Microphone: Capacitive Omnidirectional
Receiving Sensitivity: ‑95DB
Output Maximum : 1.7Vp‑p
Output Impedance: About 47Ω (at 32Ω Load)
Operating Temperature Ambient Degree Range: (‑40℃ to +50℃)
Operating Ambient Temperature Range: 90% (non Condensing)
Product Size: Approx. 46.7x47x19mm / 1.8x1.9x0.7in

Package List:
1 x Receiver
1 x Transmitter
1 x Transmitter Windshield
1 x User Manual
1 x 1 For3 Charging Cable
1 x 3.5mm Sound Cable
1 x 3.5mm to TRRS Sound Cable

Note:
1. For phones without 3.5mm connector, you must use Type C, for iOS interface adapter cable (not included).2. All data are measured manually, and there are certain errors in the measurement results.