Sennheiser EW-DP ME2 SET.

SPECIFICATIONS:

Audio frequency response 20 Hz - 20 kHz (-3 dB) @ 3 dBfs
Audio THD ≤ -60 dB for 1 kHz @ -3 dBfs input level
Dynamic range 134 dB
System latency 1.9 ms
Operating temperature -10 °C - +55 °C

EW-DP EK
Input voltage ~ 1.8 - 4.35 V
Power Supply 2x AA batteries 1.5V or BA70 rechargeable battery pack or USB-C PD power supply
Transmit power (radiated) BLE: max. 10 mW EIRP
Audio output power < 2 dBV max. (high level) / < 4dBU max (high level)
Headphone Output < 50 mW into 16 Ohms
Dimensions 86 x 67 x 28 mm
Weight (without antennas and power supply) approx. 140g (0.31 lbs)

EW-D SK (Bodypack Transmitter)
Input voltage 2.0 - 4.35 V
Input current < 300 mA
Power supply 2 AA batteries 1.5 V (al-kali manganese) or BA 70 rechargeable battery pack
Occupied bandwidth 200 kHz
Transmit power (radiated) Audio link: 10 mW ERP (Range Y1-3: 12 mW ERP) BLE: max. 10 mW EIRP
Dimensions (without antenna) 63 x 80 x 20 mm
Weight (without batteries) approx. 120 g (0.26 lbs)

ME 2 (Lavalier Microphone)
Transducer principle pre-polarized condensor microphone
Pick-up pattern omni-directional
Sensitivity (free field, no load) (1 kHz) 17 mV/Pa
Max. SPL at 1 kHz 130 dB
Frequency response 50 to 18,000 Hz
Equivalent noise level A-weighted 32 dB
Connector 3.5 mm jack
Cable length approx. 1.60 m (62.99")
Supply voltage 7.5 V