Wireless audio transmission system is designed for electronic instruments wireless connection. This product features low noise, low latency, high resolution, and long transmission. Just enjoy yourself with the wireless system. Features: Latency time is as low as 5.6ms, making your performance more smooth; Effective distance up to 30 meters, free from wired cable, for more convenient and flexible using. With 5.8G wireless transmission band (ISM Band), 2.4bit/48KHz sample rate, giving you high quality, low interference, lossless professional sound quality. Stay away from the congested 2.4G/UHF band. Support 4 sets of devices working at the same time, one-to-one connection and no-interference; one-key to change channel conveniently. 190 rotatable 1/4" plug, widely apply to all audio equipment with 6.35mm jack. Built-in 1100mAh storage battery, enduring more than 8 hours continuous use time. Support 1.5 hours quick charge. Specifications: Sample Rate: 24bit/48KHz uncompressed professional sound quality Wireless Band: 5. 8G Latency: 5. 6ms Range: 30m / 98.4ft outdoor or 15m / 49.2ft wall distance THD+ Noise: -98dB Dynamic Range: > 105dB A weighted Frequency Response: 20-20KHz, 1dB/-3dB Channel: 4 sets of devices working at the same time Battery Capacity: 1100mAh Playing Time: 8h Charging Device: 1 in 2 out USB charging cable (support quick charge) Item Size: 9 * 4.3 * 1.4cm / 3.5 * 1.7 * 0.6in (unfold state, the main body) Item Weight: 51g / 1.8oz (single one) Package Size: 15.3 * 12 * 4.5cm / 6 * 4.7 * 1.8in Package Weight: 230g / 8.1oz Package List: 1 * Transmitter 1 * Receiver 1 * USB Cable 1 * Storage Bag 1 * User Manual (English&Chinese) Note: Actual range is dependent on RF environment, including reflections, interference and absorption.