Plug and play, easy to use, small in size, light in weight and easy to carry. Built-in rechargeable lithium battery, long working time, equipped with USB cable, easy to charge Support 4 groups of devices to be used at the same time, the maximum transmission range can reach 50 meters Ultra-high frequency 730mhz original sound transmission, anti-interference, ultra-short delay. Wireless transmitters and receivers can be used for electro-acoustic musical instruments such as guitars, basses, violin, etc. parameter: Audio response range: 20Hz-20kHz Transmission range: max.50m (barrier-free); 30m (through walls) Transmission delay: less than 4ms Power supply: Built-in 3.7V 600mah rechargeable lithium battery Charging time: 2 hours Continuous use time: 4 hours Charging port: USB size:11x4.5x1.5cm / 4.3x1.8x0.6 inch Material:ABS colour:black Package Contents: 1 * Guitar transmitter 1 * Guitar receiver 1 * power cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. If you have any questions, concerns, or need further information, please feel free to contact us anytime. Our team is dedicated to providing you with support and answering any inquiries you may have. Your satisfaction is our ultimate goal. We look forward to offering you top-quality products and service! Thank you for your support._x005F_x005F_x005F_x000D_