How to disassemble Amoi A video recorder?

Pull the metal cover (cap) out of the pen body.

Pull out the metal cover (cap) on the camera pen that connects the camera buttons from the pen body and pry it open with a screwdriver, so that the cap can be removed, and then you can see the chip inside, and then pull out the chip.

Now many recording pens have welded lithium batteries. Be careful when changing them. Unscrew the recording pen and find a suitable lithium battery. When welding, tools such as screwdriver, soldering iron, soldering tin, insulating glue and scissors are needed. The battery of a recording pen is generally solidified in it, just like the battery of a mobile phone can't be disassembled, so it can't be replaced basically.