Wonderful Design: It is designed for economizing your old polish and make it evenly when paint on your nails. Mix thick soak-off gel nail polish, separated nail lacquer. It is a good gift for nail polishes enthusiast. Easy to Use: Fix the nail polish on the shaker and then adjustable straps to stabilize the bottles when the Shaker vibrates. Plug the machine,press the button and start to work. With four anti slip bases make sure the stable operation. Adjustable Strap: Come with 3 rubbery fix belts for different size nail polish. You can adjust it according to the size of your nail polish bottle. You can use it shaking every shape and size bottle. 2 Power Supply Methods: Rechargeable use or batteries for cordless operation, small size and portability.Please pay attention: It uses AA batteries, Wrong written on the box. Very sorry for the trouble that hopes you don't mind. Customer Service：If you have any questions with this product, please to contact us directly, we will offer you satisfying solutions within 24 hours (except public holiday). Features: Plug in power/Battery dual purpose(battery not included) If you need batteries, please buy AA batteries. 3 detachable, adjustable rubber securing straps. 1 on/off button, with a lighter pressure 'pulse on' feature. Fits up to 75 oz polishes with all shaped bottle necks. Offering zero-fatigue, hands-free shaking, the shaker consistently delivers smooth, bubble-free applications. Tips: The nail machine vibrates with high frequency, it is a little noisy. hope you don't mind. This product is not suitable for continuous use. Don’t run for a long time. For best results: Bottles need to be shaken for 10-15 seconds. Let bottle sit for 1 minute before using. Description: Plug: US Plug Color: Silver Material: High Quality ABS, Plastic & Metal. Size: 18*12*5cm Output: 3V 550mA Input: 100v-240v Frequency: 50-60Hz Shelf life: 90 days Package included: 1PCS Nail Polish Lacquer Shake 1PCS Charger 3PCS Fixing bands