PIONEER4YOU. IPV 4 S Introducing the IPV4 S, the upgraded version of the IPV4 by Pioneer 4 You. P4U developed this product to fix the few issues on the IPV4 V1. it's already upgraded to 120W & compatible with (NI200 & TI ) as well. The IPV4S is structurally different than any IPVs they came out with. In comparison of the IPV4 & the IPV3, it comes close for having the identical size but the IPV4 is slimmer & has a new grip look to it. The grip on the IPV4 is almost rubbery looking. The unit is also less bulky & pointy like the IPV3. The IPV4 S has rounder corners & more sleek. You can also remove the grip to gain access towards the battery slots. The IPV4 S takes 2 18650 batteries which gives it more power & less time to charge. Unlike the IPV3, the IPV4 S can now charge with the batteries without having to take out your 18650 with a USB (Universal Serial Bus) adapter & into a wall plug. There is a charger port will be blocked or removed on the new IPV4 S. This device is recommended for advanced u...