Description: This small sized bluetooth speaker is a perfect choice for you if you just need one. The advanced technology makes abundant stereo audio and excellent loud sound in such a small portable size. Don't miss it! Features: 1. Built-in Rechargeable Battery for about 3 to 5 hours of playtime according to the volume level. 2. High Quality Clear Sound: Powerful 52mm diameter speakers and advanced technology make abundant stereo audio and excellent loud sound in such a small portable size. 3. Fashionable and Stylish Design: small size make Bluetooth Speakers Personalized and Modern to demonstrate the style and spirit of youth. The USB reader can also read TF or SD card. 4. Built-in Microphone for hands-free speaker phone calling. 5. It is very lightweight - makes Bluetooth Speakers really easy to carry just anywhere (at home, at the gym, when exercising, camping, traveling, even camping). Specification: Shell Material: Plastic Color: Black, White, Blue, Red (Optional) Length: 15cm / 6inch Diameter: 5.2cm / 2inch Output Power: 3W * 2 External Magnetic Speaker: 4? 3W Input Sensitivity: 400MV Resolution: ? 90dB SNR: ? 88dB Operating Voltage: DC 5V Frequency: 50Hz-20KHz Battery Capacity: 1000mAh Standby Time: About 10-12 hours Play Time: About 3-5 hours according to the volume level Package Weight: 375g Quantity: 1pc Package included: 1 x Bluetooth Speaker 1 x Charging Cable Note: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.