This electrically activated shaker is a must for tech heads, gadget guys, and lazy bartenders. The easy press lock on or pulse button on the side of this cocktail shaker twirls and whirls your cocktail into a cyclonic frenzy. Constructed from ultra durable stainless steel and acrylic making it nearly imposable to break. A great for the mixoligist who thinks he has every bar tool out there. Super easy to use. No more carpel tunnel or tennis elbow from hand shaking. Just push button and you r cocktail is blended. The Cocktail Cyclone Operates on 2 common AAA batteries, (included) . Standard 16 ounce capacity. Now's your chance to put a new spin on your next cocktail.