I'm not a fan of 510 carts because of the harshness of the tokes . However I needed to get a vape with usb charging for use when camping away from the electrical grid . So I ordered a Davinci Artiq although I was sceptical of Davinci's claim the re routed vapor path would reduce the heat by 90 percent . It does definately reduce the heat by a considerable amount enough to eliminate coughing sessions from the tokes . The electrical functions all work and I like the haptic draw feature also . So overall it's a decent unit and I don't regret the purchase but the cart of live resin I'm using is poor quality so I'm anxious to try something a bit better soon .