Features： [Omnidirectional Microphone] Includes 1 and 1 with omnidirectional pick up pattern and windshield can pick up sound from all directions and reproduce it clearly while reducing plosive background noise and wind sound. [30-90m Wireless Transmission Distance] Adopt 2.4G wireless transmission technology 90m/ 295.2ft effective transmission distance in line-of-sight(LOS) area and 30m98.4ft in non-line-of-sight(NLOS) area giving you more movement . [Broad Compatibility] Equipped with 3.5mm TRRS to TRRS and 3.5mm TRRS to TRS audio cable widely compatible with smartphone and great for Vlog video recording live streaming interview online teaching business meeting and more. [Built-in Battery & Gain Control & TFT Screen] 300mAh () and 350mAh () large capacity battery long battery life up to 7 hours; 6 levels of gain adjustable with clear display screen showing battery status and audio level easy to adjust; also support headphone connection for real-time monitoring. [ Clip-on Lavalier Microphone] Compact size and weight can be easily clipped on your collar no need to hold it by hand you can hardly feel it while speaking; comes with an exquisite case convenient for neat storage and portable application. Specifications： Color: Black Material: ---TX Wireless Transmission: Digital 2.4GHz RF Frequency Band: 2400-2483.5MHz Frequency Response: 20Hz-20KHz Transmission Delay: 8ms Working Distance: 90m/ 295.2 (LOS area)/ 30m98.4ft (NLOS area) Audio Input: 3.5mm TRS mic input Pick up Pattern: Omnidirectional Sensitivity: 42dB土2dB Battery Capacity: 300mAh Charging Voltage: USB 5V Charging Time: 1.5H Battery Life: 7H Size: 4 * 3.6 * 2cm/ 1.5 * 1.4 * 0.78inch Weight: 20g/ 0.7oz ---RX Wireless Transmission: Digital 2.4GHz RF Frequency Band: 2400-2483.5MHz Transmission Delay: 8ms Working Distance: 90m(LOS area)/ 30m(NLOS area) Signal to Noise Ratio: >92db Audio Output: 3.5mm TRS output 3.5mm TRRS headphone output Number of Audio Channels: 1 Gain: 1-6 Level Battery Capacity: 350mAh Charging Voltage: USB 5V Charging Time: 1.5H Battery Life: 7H Display: TFT screen Size: 4.1 * 4.1 * 2cm/ 1.6 * 1.6 * 0.7inch Weight: 25g/ 0.8oz Note： The and smartphone showed in the pictures are not included. Package List： 1 * TX 1 * RX 1 * Lavalier Microphone 1 * Mic Windshield 1 * 2-in-1 Charging Cable 1 * 3. 5mm TRS-TRS Cable 1 * 3.5mm TRRS-TRS Phone Cable 1 * Carrying Case