Frequently Asked Questions
Do not press the volume buttons when the power is on. Pressing them at the same time will put the M503 into hidden upgrade mode (this mode is only used when sending the M503 in for repair), and misuse will cause the M503 to cut out. It is possible that the unit has frozen. In this case, insert the reset hole with a sharp object or press and hold the power button for 8 seconds, if there is no response, Access to after-sales support
This product consumes more power than a regular MP3 for the following reasons.
First, because the screens we use are HD screens. The transparency is much higher than other products, resulting in higher power consumption.
Second, the M503 solution supports all formats, plus 1080P, so the M503 itself will consume more power due to decoding.
Depending on the actual environment, temperature, volume, and screen brightness will affect power consumption.
Because of the built-in noise reduction chip and decoder chip, only a 600mA battery can be built in.