The plastic is sturdy enough to be used without fear of the bottle opener and thick to protect from the heat.
The lighter heats well and allows to light a cigarette. This will burn, not burning. There is no risk of fire.
It made me a little scared for my phone to have that option above but there are several protections: thick plastic, the lighter is extinguished after a few seconds and finally a security preventing turning it into his pocket.
It recharges with a micro USB cable supplied with. By not serving me quoccasionnellement I have not yet had to recharge it since I got it.