This is a great little pump.

Display: The display is clear and easy to read, it includes multiple adapters which is a plus.

Function: For a pump of its size, it inflates quickly, and seems to easily manage 29 x 2.4 or 2.5 MTB tires. The pump comes with an assortment of adapters, which is very nice. I use it most frequently with the Presta press-on adapter. It is on the loud side when you run it, but again the majority of these small pumps are fairly loud. The light inline with the pump is a very nice touch for working in low light.

Battery Life: As advertised I can inflate about 3-4 tires from flat with this pump before the battery needs to be charged. I use it most frequently to top off before a ride, and as a backup. Using it to top off already inflated MTB tires, I can use it for about a week and a half before the battery registers one bar lower. I usually recharge the battery when it gets to 50%.

Accuracy: My pump gauge seems to run about 1 PSI higher than actual pressure as measured by my Jaco gauge (which is incredibly accurate). Testing with my Jaco gauge confirmed it is accurate to +/- 1 PSI. Inflating to 22 PSI (measured) gives me +1-1.3PSI above the pressure measured by my Jaco gauge. I'd rather be higher than lower if there is a variance. On a high volume, low pressure MTB tire being 1 PSI low can result in a pinch flat, or destroying your rim, so it's good that the variance (on mine at least) is biased to be on the high side.

Size: This little pump is very compact. It easily fits in a hip pack, backpack, or jersey pocket. I do wish it came with a waterproof storage bag. The listing says it comes with a waterproof bag. It IS NOT. It's a small microfiber storage bag. I keep mine in a ziplock storage bag in my hip pack. With the valve adapter removed this pump will barely fit into the downtube storage compartment on my Santa Cruz Hightower. It is a VERY tight fit without being in a storage bag. I would not trust leaving it in there without being in some sort of waterproof bag, as the downtube is not 100% water tight. If I ride with a hip pack, so far I would be 100% comfortable riding with just this little pump, and no mini-pump/CO2 inflator in most conditions. My only concern would be using this in the pouring rain.

I carry this for use on my OneWheel and my wife’s scooter. Absolutely phenomenal and tiny amount of real estate in your bag. It is rather loud, but it works very well. Absolutely a must have to throw in our riding bag when we go for a ride.

Super noisy but works great

This is a great bike pump backed by a very responsible company. The pump is compact and lightweight, making it easy to bring along on rides. I’ve used it to inflate my tires both before and during rides, and it even came in handy when a friend’s tire was running low.

I had no issues during the first few rides, but after some use, the unit stopped charging properly. It would indicate a full charge after only a few seconds of being plugged in via USB-C, but once powered on, it showed only one bar.

I contacted the seller and provided photos showing the charging issue. They responded promptly and assured me that a replacement would be sent. True to their word, a new unit arrived within a couple of days.

Overall, this is a solid, convenient product with excellent customer support. I’m very satisfied with both the pump and the company standing behind it.

Looks convenient for the small size but the battery drains without using it. When fully charged you can inflate your tires like once. I’d prefer to have a small manual pump for safety.

UPDATE: After posting my original review, the sales support team contacted me and offered me help with this product, this is a top notch detail. So even thou this particular item had some issues, I am updating my review to 5 stars because of the follow up.
Thanks.

Worked great for 2 months on our ebike tires. Now it will not turn on or take a charge, case gets very warm when attempting to charge.

Great bike pump for off road biking