AGPtek M28 Guide Rapide page 13

Capacity
Case
Playing time
Charging time
Standby time
Battery capacity
Recording distance 10-15 meters
Lyric format
Color
16 GB; support up to 64 GB micro SD
card(SD card not included)
Full zinc alloy case
25-30 hours at medium volume, 14 hours
at maximum volume
1.5 hours
520 days
3.7V/260 mAh
LRC
Black