Mini Wireless Bluetooth Speaker Smart USB Rechargeable 400mah Waterproof Portable Speaker for

Feature： 1. FULL RANGE SPEAKER： Mini Bluetooth speaker elastic bio diaphragm, sound more penetrating, inner full range HD speaker, enjoy clear music. 2. CLEAR SOUND： Mini wireless speaker sound clear, surging dynamic, bass thick and powerful, full of shocking sound. 3. MONO： Wireless Bluetooth speaker using mono speaker combination, bass clear and more shocking. Intelligent chip, one key switch. 4. BUILT IN MICROPHONE： Portable Bluetooth speaker with built in microphone design, support HD voice calls. 5. USB CHARGING： Waterproof Bluetooth speaker with USB port, compatible with most devices, easy charging, suitable for indoor and outdoor use. Specification： Item Type： Mini Bluetooth Speaker Material： ABS Product Size： Approx. 4.5x4cm 1.8x1.6in Battery Type： Polymer Battery(Shipped with Built in Battery) Battery Capacity： 400mah Frequency Response Range： 20HZ to 20KHZ. Package List： 1 x Mini Wireless Bluetooth Speaker1 x USB Data Cable1 x Lanyard1 x Instruction Manual Note： All data are measured manually, and there are certain errors in the measurement results.