XHDATA D-608 - Detailed Specifications and Support; Audio, Connectivity, and Power Specifications; Contact Information and Certifications

Headphone impedance: 16-32
Speaker specifications:
40mm (double iron boron 16 cores) 4Ω/5W
TF card: support 32G
Audio playback format:
Mp3/ WMA/ WAV/ FLAC
Bluetooth transmission distance: 10M
DC: 3.7V (18650) power battery 3000mAh
DC 5V input: DC5V/1000mA