This PSU is transformerless because the manufacturer tries to squeeze every penny from the product by keeping the costs down. Such kind of power supplies has been discussed before, with the user reporting getting electric shocks from the device. Now, your device seems to be better insulated, with only the small red LED and the switch being at mains potential while sticking out of the case.

I wouldn't be too worried, but would keep my hands as far as possible from the LED and the switch while the torch is charging.

This PSU is transformerless because the manufacturer tries to squeeze every penny from the product by keeping the costs down. Such kind of power supplies has been discussed before, with the user reporting getting electric shocks from the device. Now, your device seems to be better insulated, with only the small red LED and the switch being at mains potential while sticking out of the case.

I wouldn't be too worried, but would keep my hands as far as possible from the LED and the switch while the torch is charging.