Overview: This is a slim USB powered speaker; its stable and lossless bass effect and stereo surround sound speakers bring you great music. With a 3.5 mm audio plug, it is very suitable for desktops, laptops, TVs, smart phones, tablets, MP3, MP4, etc. Feature: Bluetooth-compatible 5.0 technology has lower power consumption and more stable signal transmission. Supports multiple playback modes of Bluetooth-compatible/U disk/TF card/AUX/FM radio. Stable HiFi bass sound and stereo surround sound speakers bring you wonderful music. 2*3W speakers, using speakers and passive diaphragm, strong bass performance, giving you better sound quality enjoyment. With a 3.5 mm audio plug, it is very suitable for desktops, laptops, TVs, smart phones, tablets, MP3, MP4, etc. The USB-powered speaker is energy-saving, environmentally friendly, safe and reliable, and is equipped with a 1500mAh rechargeable battery. Specification: Material: ABS Bluetooth-compatible version: 5.0 Power: 3W*2 Power supply: DC 5V 1A Battery: 3.7V 1500mAh Input interface: USB/AUX/TF/Bluetooth-compatible/FM/PC Signal to noise ratio: 80dB Frequency response range: 20Hz-18000KHz USB/TF: up to 32GB Color: black, green (optional) Item size: about 17.7*10.7*7.2cm / 6.97*4.21*2.83in Packing size: approx. 18.5*12*8cm / 7.28*4.72*3.15in Package weight: approx. 608 g / 21.45 oz Packing list: 1 * speaker 1 * USB data cable 1 * 3.5mm audio cable 1 * User Manual