A9 Crack Pattern Mini Speaker Colorful Light Support U Disk TF Card AUX Port Wireless Portable Loudspeaker Box White The mini speaker is crack pattern design, BT connection, support U disk and TF card, support the aux audio line, with multi-color flashing light, provide you with a more perfect audio-visual experience. Features: Adopts ABS+PC injection crack design, rich in design and durable to use. Easily connect to various BT devices wirelessly, automatically return to the side within a working range of 10 meters, and enjoy the freedom brought by wireless. Support U disk, TF card music playback, up to 16G, plug and play, support common mainstream music format MP3 playback. Support the aux audio line, fully compatible with 99% audio input devices, mobile phones, computers, MP3/MP4, etc. The bottom surface is made of non-slip material, so you can rest assured that you can put it on the desktop, and the metal iron mesh is used on the top, not easy to break. The switch is designed below the BT speaker, USB port, TF card socket. The volume adjustment key + the up and down switch song keys make it more convenient for you to use. Lightweight and compact, you can put it in your pocket and carry it with you. Only need a mobile phone or a memory card, you can enjoy music anytime and anywhere. The luminous multi-color flashing light makes you feel more rhythmic, and the frame uses transparent crack pattern, so that the light is more beautiful. Specifications: Material: ABS Color: White, Blue, Yellow, Black, Red, Green (optional) BT Version: BT 2.1 Speaker: 40mm Power: 4 3W Adjustment Method: Rotary key Working Voltage: DC3.7V-4.2V Power Supply Method: High-quality double-protected lithium battery, 3.7V 400mAh (included) Playing Time: About 2-3 hours at medium volume Charge Time: 2 hours Charging Voltage: Limit voltage DC5V Charging Current: DC500-1000MA Signal-to-noise Ratio: 80DB Distortion Rate: 0.5%@(1KHz) Frequency: 90Hz-20KHz Item Size: 58 * 52mm / 2.28 * 2.05in Package Weight: 55g / 1.94ounces Package Size: 70 * 60 * 50mm / 2.76 * 2.36 * 1.97in Packing List: 1 * Mini Speaker 1 * USB Cable