Love this! Easy to use, battery life is really good and because it's portable, I like using this better than the kind you plug in. Forgot about charging for like 4 days, battery on my Elvie was dead. Turned this in and it was still at 3 bars. Was a life saver for work. You can also use this while charging which is super helpful. Pump piece fits my motif and spectra bottles so when I'm finished I just place a cap and store. Came with a cooler bag and 2 additional filter pieces. Hard to find valves pieces that actually fit this pump though.