Features: The use of zinc alloy shell, 3.5D high-strength mirror, exquisite mini. 1.8in OLED color screen display, high sensitivity touch key + side button control. Support music playback, video playback, e-book reading, picture browsing, FM radio, recording, and other functions. Strong BT function, stable signal, can be connected to BT headset, speaker. The system supports 28 kinds of language switching, the fuselage has its own memory, 8G, 16G, 32G can be selected. Specification: Model: M25 Material: Zinc Alloy BT Version: 5.0 Power Supply: DC 5V 1A Battery: 3.7V 300mAh Input Interface: USB/AUX/TF/BT/FM Input: Support MP3/APE/FLAC/WAV/WMA SNR: 90dB Frequency Response Range: 20Hz-20KHz Charge Time: 2 hours Play Time: 30 hours Memory: 8G,16G,32G(Optional) USB/TF: Up to 64GB Color: Black Item Size: approx.8.5*4*1cm / 3.35*1.57*0.39in Package Size: approx. 14.5*9*4.5cm / 5.71*3.54*1.77in Package Weight: approx. 200g / 15.87oz Package List: 1 * Speaker 1 * USB Cable 1 * 3.5mm Earphone 1 * User Manual