[sethimus]

i use it as pressure checker that fills up the tire if needed. we tested them in house, good for 4 refills of a 29er to 1.5bar

 

[johnbryanpeters]

Since I've used ONE CO2 cartridge on a mountainbike ride in the last 5 years. I'm gonna pass on relying on a gadget that needs charged.
Also AliXpress probably sell a version for a tenth of the cost of that.

Which will function for two weeks.