Specs

DJI Mic Transmitters

Model AST01

Dimensions 47.32×30.43×20.01 mm
Weight 30 g
Wireless Mode GFSK 1 Mbps and 2 Mbps
Equivalent Isotropic Radiated Power (EIRP) <20 dBm
Operating Frequency 2400-2483.5 MHz
Battery Type LiPo 1S
Battery Capacity 320 mAh
Battery Energy 1.23 Wh
Battery Voltage 3.85 V
Charging Temperature 5 to 45° C 
Operating Temperature -10° to 45° C 
Charging Time 70 mins
Operating Time 5.5 hours
DJI Mic Receiver
Model ASR01
Dimensions
47.44×32.21×17.35 mm
Weight 24.9 g
Wireless Mode GFSK 1 Mbps and 2 Mbps
Equivalent Isotropic Radiated Power (EIRP) <20 dBm
Operating Frequency 2400-2483.5 MHz
Battery Type LiPo 1S
Battery Capacity 320 mAh
Battery Energy 1.23 Wh
Battery Voltage 3.85 V
Charging Temperature 5 to 45° C  
Operating Temperature -10° to 45° C
Charging Time 70 mins
Operating Time 5 hours
Charging Case
Model ASB01
Dimensions 103.06×61.87×41.50 mm
Weight 162.2 g
Battery Type LiPo 1S
Battery Capacity 2600 mAh
Battery Energy 10 Wh
Battery Voltage 3.87 V
Charging Temperature 5 to 45° C 
Operating Temperature 5 to 45° C 
Charging Time 2 hours and 40 mins
Operating Time
Fully charge three devices simultaneously 1.8 times

General
Microphone Directions
All Directions
Frequency Response
Low Cut Off: 50 Hz - 20 kHz
Low Cut On: 150 Hz - 20 kHz
Max Sound Pressure Level (SPL)
114 dB SPL
Max Input Level (3.5 mm)
-17 dBV (THD < 0.1%)
Equivalent Noise
23 dBA
Monitor Interface Output Power
Max Output 22mW@1kHz, 32Ω
Max Transmission Distance
250 m (FCC)
160 m (CE)