Description:This transmitter uses professional transmitting transistor, which gives excellent audio quality. The audio port and microphone port are independent from each other. And the input signal is processed independently too, which can decrease the loss of sound quality in a large extent.Features:1. Features at portable size, high quality, long broadcasting range and stable performance.2. Adopt imported high quality electronic components, equipped with special antenna, stable signal, good secrecy, uneasy to be interfered.3. Support memory card to broadcast mp3 format music; 3.5mm AUX input: transmit music from your smart phone, computer, MP3 or CD player.4. Designed with Stereo and Mono audio output, both line-in and microphone volume is adjustable by pressing the button.5. Application to tourism, meeting room, campus, driving, teaching stadium, home wireless audio, simultaneous interpretation, camping etc.6.LCD display, backlight function; simple and convenient operation. 7. You can manually adjust the signal strength. Transmission Distance (Diameter): 100m/328ft at 1 or 2 level signal; 300m/984ft at 3 level signal; 500m/1640ft at 4 level signal. Specifications:Frequency: 60MHz ~ 108MHz (adjustable)Frequency Increase: 0.1MHzFrequency Stability: 10PPMFrequency Response: 50Hz ~ 1500HzSignal to Noise Radio: 60dBTransmit Power: 0.01 / 10 / 100 / 200mWTransmission Distance (Diameter): 100m/328ft at 1 or 2 level signal; 300m/984ft at 3 level signal; 500m/1640ft at 4 level signalWorking Hours: 8 / 6 / 5 / 3 hPower: BL-5C Li-lon, 3.7V 1000mAhCharging Time: about 5 hoursSupport memory Card: Maximum 32GBTransmitter Size: 79 x 58 x 18mm / 3.11 x 2.28 x 0.71inchAntenna Height: 114.3mm / 4.5inchPackage Weight: 217gPackage List:1 x FM Transmitter1 x Antenna1 x USB Charging Cable1 x Microphone1 x Clip1 x Audio Cable1 x Manual