product specification :1. Bluetooth: 4.22. Wireless transmission range: 10m3. Battery capacity: 600mAh4. Built-in voltage: 3.7V5. Playing time: 2h6. Power: 5W7. Size: 74.5 x 75.1 x 94.5 mm8. Support Bluetooth connection, audio input, FM radio, Micro SD card direct reading, U disk direct reading9 0 C..
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