mixar works well enough. but.. the motor does not last long. i got 3 months from my last one. for 5 bucks i cant expect much. i will buy another and it should last me till we are done formula feeding. expect to replace batteries every month and the unit every 3 months. dont worry about button difficulty just remember to hold it properly. trial and error will evidence that.Get more detail about Munchkin Formula Mixer,Colors Vary.
