It is the antithesis of smartphones need charging every day. Him I recharge when I think and it's really not often I say every 15 days and it is far from empty. It must be said that he has a smartphone battery with a screen and use a simple phone. My use? Basic phone and awesome accessory: a small flashlight. It's not the LED flash on the camera, no no no, it's a small lamp dedicated to this use. IT is rather heavy, rather solid, assumed drip-proof, it is a bit old: I love it !!