Electric Self-Mixing Protein Shaker Bottle 750ml - High-Torque Battery-Powered Blender Cup with Auto-Stirring Technology - Portable Protein Shaker for Gym, Workout & Travel - Perfect for Protein Powder, Pre-Workout & Meal Replacement (Black)

I liked the idea, but it is poorly executed with this product. I used it as a formula mixer, and it worked well for a couple of months. Expect it to break down because it's made of cheap products.Well I ordered to bottles and the pink one came good with no problems. the black one came damaged with the top falling off had to super glue the top just so I can use it, it fell apart and the detached blade hit the floor and crackedI love this cup! I bought 2 of these… one for work and one for home/travel. i am a bariatric patient so I make protein shakes and coffees daily. I took it on my cruise with me and it was perfect. I’ve taken it with me in my backpack for flights and roadtrips too. Super easy to use and clean, love that it takes batteries and I don’t have to charge it and it is not noisy at all!Love the touch battery operation!Didn’t blend as well as a shaker bottle.Changing my review from 5 stars to 3. The threaded part of the mug that you screw the top onto cracked. So when you shake up the ingredients it sprays everywhere. I can still use the battery powered mixer component. But, I have to unscrew the top so it doesn’t leak when I drink from it.I like that it’s a 20oz container with great grip, no leakage but this battery operated mixer is not strong enough to dissolve any powder contents. And when used daily, batteries get expensive. Better off with a USB operated type mixer.Worked once and didn't blend after that. TrashyLove the cup, had a slight thing which I thought was a defect, got in contact with the seller, and had the problem fixed within the hour.