_CS_4 months ago000Hello, in the specifications it says: Operating time 30 min. Is this correct? Is it possible to use it while it's charging? Thanks in advance Show in original language (French)gringolino4 months ago • purchased this product000purchased this product Helpful answerHello, the operating time depends on the level you are using. Level 1, the battery lasts for 1 hour. Level 3 lasts approx. 40 minutes for me. The device does not work during charging! GreetingsShow in original language (German)CommentAnonymous4 months ago • purchased this product000purchased this productIt doesn't work during charging, probably for safety reasons.The battery life is really good for this device, I'm very satisfied. Show in original language (French)Comment