Spin Series portable speaker has loud and Dynamic sound quality, fashion and graceful appearance makes it become an ornament of your desk, 1000mAh built-in battery, portable size, full sealed cover, built-in Mic, SD/TF card slot and flash drive port, all of those features enable it to be a perfect speaker for outdoor activities like hiking, camping, riding, climbing, picnicking. The portable speaker is equipped with a 5W high-quality speaker. Loud and Shocking enhanced bass sound can easily spread to the surroundings, gives you unmatched listening experience. It has Multi-function. It can be connected with Bluetooth enabled devices by Bluetooth(4.2+ESR). When you are out where the signal is very poor, you can use SD/TF card or flash drive to store music. Built-in mic enables hands-free calls. It can connect it to the tablets, phone, ipod, pc and Television.