Features: Small size yet has lossless professional sound quality, low noise, low latency, good resolution. 2.4GHz wireless transmission band, 24 bit/48KHz sample rate. 30 meters long distance effective transmission distance. One key to switch mono/stereo, meet needs of your different device. Built-in rechargeable -ion battery that can be conveniently charged by USB. 5 sets of equipment can be supported to work at same time. acts as a collar-clip wireless microphone and can be used as a pocket-strapped . Specifications: Model: SWS10 / WP-10 (Optional) SWS10: Receiver without Volume control button WP-10: Receiver has Volume control buttons Material: ABS Sample rate : 24bit / 48KHz lossless digital transmission sound quality Wireless Band: 2.4GHz Delay: < 12ms : 30 meters or 15 meters wall distance Battery Capacity: 780mAh , receiver 550mAh Charging Device: USB charging cable Signal-to-noise Ratio: -98dB Dynamic : >105dB Frequency Response: 20 to 20KHz, +1dB / -3dB Item Size: 60 * 45 * 20mm / 2.36 * 1.77 * 0.79in Item Weight: 100g / 3.53oz Package Weight: 220g / 7.76oz Package Size: 13.2 * 10.8 * 6.5cm / 5.20 * 4.25 * 2.56in Packing List: 1 * 1 * Receiver 1 * Charging Cable 2 * Audio Cable 1 * Manual (English)