Initialized. Operation confirmed. Checked after using for about an hour. Button operation: ⭕️ Touch panel: ⭕️ Left stick: ⭕️ C stick: ⭕️ D-pad: ⭕️ Charging: ⭕️ Microphone: ⭕️ Earphone use: ⭕️ Sound/music playback: ⭕️ SD card reading: ⭕️ Inner camera: ⭕️ Outer camera: ⭕️ Game software reading: ⭕️ Internet connection: ⭕️ Volume adjustment: ⭕️ Speaker: ⭕️ Confirmed that all of the above are operating normally. There is a small chip on the C stick, but operation is not affected. There is no noticeable screen burn-in. Touch pen and MicroSD 4GB included.