Rather than having to their Duo charger that was too big for my needs this charging stand is just the right size to hold the S10 and not take up much space when not in use. Id say exactly how many but I literally lost count. Thank you, 3M. In the morning, I powered it up, pushed the "on" button, then connected it to my phones Bluetooth. The carrying case--which is also the charger--has around a 4-7 day longevity, which is fantastic for me. If you want good sound i would suggest to get the megablast instead, it’s like they made the magaboom 3 this bad just so you get the other one . Still use this and they are fantastic doesnt hurt the ears when you smile or laugh but long term it can become uncomfortable. Sat unused for 9 days and battery life was at 79%. It’s a little tight in the chest area I’m 34DD when “full” (still breastfeeding)! I immediately sent this back.