Rolton E200 Mobile Phone Wireless Bluetooth Speaker Mini Portable Outdoor Small Audio Subwoofer Speaker(Black) Tag-Screws to protect the interface while

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Rolton E200 Mobile Phone Wireless Bluetooth Speaker Mini Portable Outdoor Small Audio Subwoofer Speaker(Black) Tag-Screws to protect the interface while1. Weight: 77g (including lithium battery) 2. Material: ABS 3. Dimensions: 8. 35 x 5. 5 x 2. 7cm 4. Power supply: USB charging lithium battery 5. Battery capacity: 500mAh 6. Bluetooth version: Bluetooth 4. 2 7. Playing time: 8 hours 8. Effective distance: more than 10 meters (without obstacles) 9. Frequency response range: 100HZ 20KHZ 10. Output power: 3W 11. TF card storage: 32GB 12. Display: LED display 13. Audio format: MP3 WAV (lossless format)