Features: Wireless and Wired Dual Output: the pickup is a set of wireless pickup. The pickup is equipped with a transmitter and a wireless receiver. At the same time, the system still retains the function of wired output. Perfect Sound Effect: the new generation RX double coil technology greatly increases the dynamic and hierarchical sense of sound. Scientific Circuit: equipped with imported microphone, the volume can be adjusted independently. It supports sound pickup skills such as playing board, AM, PM and clapping. The details are clear and the compatibility is stronger. Simple Operation Interface: detailed humanized control design, simple and innovative. The main volume, low frequency, high frequency, microphone, and wireless control can be adjusted independently to meet your personalized needs for music. Recommended Scenario: with 50m effective transmission distance (micro delay), and high quality sound transmission within 15 meters, the pickup is can be used in small concert halls and live houses, classrooms, bars and other small concert venues. Wide Compatibility: it is suitable for guitar installation with sound hole diameter of 80-120mm. Specifications: Color: Black / Silver (Optional) Material: Alloy Suitable for: 80~120mm soundhold guitar Built-in Battery: 3.7V 1200mAh(pickup), 3.7V, 800mAh(receiver) Item Size: 137 * 30 * 28mm / 5.39 * 1.18 * 1.10in Item Weight: 200g / 7.06oz Package Weight: 383g / 13.52oz Package Size: 17.5 * 12 * 6cm / 6.89 * 4.72 * 2.36in Packing List: 1 * Pickup 1 * Receiver 1 * Tail Nail Leather Cover 1 * Output Tail Nail 1 * Cross Screwdriver 1 * Shim 1 * Clamp 1 * Charging Cable 1 * Manual (English)