Material: Plastic + Metal Size: 38.1*6.5*5.6cm Colors: White, Black Power supply mode: Built-in lithium battery Function : Insert Card, Radio, Voice Prompt, Call Function Package Contents: 1 * Computer Bluetooth Speaker stunning sound with bass, giving you a wonderful listening experience while listening to music, watching movies, playing games, and online meetings and classes.2.EFFORTLESS CONNECTIONOur PC speaker supports wired and Bluetooth connections. With 5.0 Bluetooth technology, the soundbar can be connected to Bluetooth-enabled devices such as smartphones, laptops, tablets, etc. quickly and smoothly. The included 3.5mm Aux cable allows connection to any device with an AUX output. The speaker can also read music from TF card and USB drive.3.COMPACT AND SLIM DESIGN: The soundbar for desktop computer is sturdy and special with a size of 38.1*6.5*5.6 cm so that it remains hidden under the computer. 4.LONG PLAYTIME: The desktop speaker is equipped with a 1200mAh rechargeable battery, which can play music continuously for up to 16 hours after fully charged, so you can use the speaker for an all-day picnic or a party.5.EASY OPERATION: Our Bluetooth USB speaker is very easy to set up - just plug and play. You can leave it plugged into the USB charger at all times when connecting to computers, and the soundbar will only remain set to the last mode used for your convenience.