Features: 1. Bluetooth-compatible speaker with stylish appearance is not only high-end, but also durable. 2. Wireless transmission, support hands-free calling. 3. Support TF card auto-play function. 4. Support audio output, can be connected to computer, mobile phone, MP3 and other audio interfaces. 5. Small body drive, large capacity, super loud volume, strong and powerful treble. Notice: Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Description: Speaker type: portable Bluetooth-compatible speaker Adjustment method: key Features: Bluetooth-compatible, LINE IN, TF card Power supply: DC 5V, lithium battery (400mah) with double protection Effective power: 3W Speaker unit: ∮45MM S / N ratio: ﹥ 80DB Distortion rate: ﹤ 0.5% @ (1KHz) Frequency: 90Hz-20KHz Audio interface: 3.5MM Impedance: 4Ω Playing time: 1Hours Speaker size: ∮: 60mm, H: 65mm Speaker weight: 200G Bluetooth-compatible version: 2.1 Working frequency: 2402-2480MHz Transmission range: up to 10 meters, the data is measured in an open and unobstructed area. Walls and buildings may affect signal transmission Material: ABS   Package List: 1 x speaker(only) 1 x charging cable