Specifications: Sample: 24bit/ 48KHz uncompressed digital transmission Latency: less than 12ms THD + Noise: -98dB Dynamic : less than 105dB Operating Band: 2.4G ISM Worldwide Frequency Response: 20-20KHz, +1dB/-3dB Power Supply: Built-in Rechargeable Lithium Battery Charging: USB port Item Size: 13 * 3.8 * 1.2cm / 5.1 * 1.5 * 0.5in Item Weight: 34g / 1.2oz (for each) Package Size: 14 * 10.5 * 5cm / 5.5 * 4.1 * 2in Package Weight: 150g / 5.3oz Note: The guitar and guitar amplifier showed in the picture are not included. You need to manually pair the receiver by yourself, if you want to use more than one set of devices. Package List: 1 * Receiver 1 * USB Charging Cable 1 * Users' Manual(English & French & German & Italian & Spanish & Japanese)