Specifications: Mini and light weight, portable to carry. Bluetooth connection, enjoy the wireless connection. The sound effect is heavy bass. Type: bluetooth-compatible Speaker Material: Metal Horn: 3W Battery: 3.7V 400mAh Lithium Battery (Included) Play Time: 2-3 Hours Frequency Response Range: 50-20KHz Charge Time: 2-3 Hours SNR Ratio: > 90dB Bluetooth Version: 4.1 Functions: Bluetooth, U Disk, TF Card, AUX Line-in Features: Vintage Style, Portable, Mini, Subwoofer Size: Length: 9.5cm/3.74", Width: 5cm/1.97", Height: 7cm/2.76" (Approx.) Notes: Due to the light and screen setting difference, the color of item may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x bluetooth-compatible Speaker 1 x Charge Cable 1 x User Manual