- Bluetooth: 5.3; Chip: JL AC7066A-2. Material: ABS+silicone button-3. Size: 138 * 31.5 * 75.5mm; Weight: 216.5g-4. Battery capacity: 1200mAh; Charging time: 4 hours-5. Usage time: MP3 playback for 3.5 hours, radio playback for 5 hours-6. Speaker: 45mm; Power: 5W-7. Supports TF cards and USB drives; Supports 3.5mm headphone jack-8. Frequency range: FM87.5Mhz-108Mhz AM520-1710Khz