1、High Borosilicate Glass: This protein shaker bottle adopts high borosilicate glass material, which is resistant to high temperature(from minus 20℃ to +150℃), corrosion and wear. 2、Y Shaped Stirrer: This mixer bottle adopts Y shaped stirrer which ensures fast and even stirring. Thickened and rounded opening won't hurt your lips and mouth. 3、Portable Handle: This portable mixer cup is designed with considerate and convenient handle, which is sturdy and highly portable. 4、Wide Application: This electric shaker cup is ideal for stirring protein powder, milk powder, coffee, beverage, enzymes, milkshakes, etc. 5、Battery Powered: This electric protein shaker bottle is powered by 2 pieces of AAA batteries. And it can be easily cleaned with warm water and detergent. Item Type: Protein Shaker Bottle Material: High Borosilicate Glass, PP Battery: 2 x AAA Battery(Battery Not Included) Voltage: 3V 1 x Protein Shaker Bottle