There are three layers or boards provided in sizes:

Remote Control Battery: 2xAAA Battery

including 16 Plus & Pro Max

Wipe with water or a small amount of detergent

The unit has been tested to avoid harmful magnetisation

4 inch digital photo frame with bluetooth speaker tf playback voice recording Colour:Gray There are three layers orCompact photo frame speaker This 4 inch digital frame displays your favourite photos and doubles as a small speaker with an 8 2W driver. The magnetic rear plus back bracket design mean it sits neatly on a desk or attaches to metal surfaces for versatile display. Playback and recording Pair via Bluetooth 5. 0 for wireless audio up to 10 metres, or play music directly from a TF card. It also supports voice memo recording and includes built in memory