Great little sturdy pocket device. The chip seems excellent, though I've only ever used it in Power(Wattage) mode. I would have liked to have seen a user power curve to aid battery conservation. The battery isn't the biggest, but, really what could you expect at this size. Build, or use, coils rated at or over 0.25 ohms to keep the power consumption low and you get an excellent stealthy device for work, what I bought mine for. I usually have a RDA on mine so I can throw it in my pocket and not worry too much about breakages. I have to add that I also own a Vaporesso Target Mini and this is better than that in all aspects.
It fits perfectly all atomisers up to 23mm diameter. I do use 24mm diameter atomisers on mine as I don't mind a slight overhang, and, to be honest, apart from really looking at it analytically no one will notice as it's so slight. The build quality is stunning and the rubberised shell feels great in the hand. The buttons are nice and clicky plus them being stainless steel they look really nice against the rubbery near ***** shell. I just bought the absolutely amazing stainless steel The Riot RDA by Anarchist (24mm diameter) and it's very matchy matchy. I will be using that and/or my ***** Kennedy 22mm diameter RDA as my go to work set up.
Let me quickly add I have dropped this on the concrete floor at work a few times but you'd never suspect it.
To sum up, it's a perfect stealthy pocket device for work or a night out.