Versatile and feature-rich digital wireless system for those who sing, speak or play instruments that allows for seamless product pairing and management via the EW-D Smart Assist App. This bodypack transmitter is compatible with a wide range of Sennheiser headset microphones and clip-on/lavalier microphones.What’s Included: EW-D SK bodypack transmitter Pouch quick guide safety guide manufacturer declaration sheetMain Features:Digital transmission operating in the UHF spectrum greatly enhances range, reliability and scalabilitySmart Assist App connects via Bluetooth Low Energy for a streamlined setup and operation at a distanceAuto scan creates reliable connections with minimal time and effort134 dB audio input dynamic range eliminates need for sensitivity adjustments and preserves every detailElimination of intermodulation enables channels to be placed in an equidistant tuning grid 600 kHz apart56 MHz of tuning bandwidth and equidistant spacing enables up to 90 channels2,240 selectable frequencies allow for fine tuningLithium-Ion battery pack (sold separately) delivers up to 12 hours of operation (up to 8 hours of operation with 2x provided AA batteries)Specifications:Frequency range: 470.2 – 526 MHzDimensions: 63 x 80 x 20 mm (without antenna)THD, total harmonic distortion: -60 dB for 1 kHz @ -3 dBfs input levelWeight: approx. 120 gOperating temperature: -10 C – +55 C (14 F – 131 F)Operating relative humidity: 5 – 95 % (non-condensing)Audio frequency response: 20 Hz – 20 kHz (-3 dB) @ 3 dBfsInput voltage range: 2.0 – 4.35 VCurrent consumption: < 300 mAPower supply: 2 AA batteries 1.5 V (alkaline manganese) or BA 70 rechargeable battery packTransmission power:Audio link: 10 mWERP (Range Y1-3: 12 mW ERP)BLE: max. 10 mW EIRP