Features: Crafted from highly borosilicate glass. The mug body is clear and visible that is easy to observe mixings status and better control time. This electric stirring mug features strong power that have 7000rpm highly speed stirring. Without lumps and taste delicate and smooth. It perfect for mixings beverages. Such as coffee, hot chocolates, milk, protein shakes, milk, etc. This electric stirring mug is battery poweres that requires 2pcs AAAbatteries(not included), which is convenient and portable to use. Three-pronged stirring stick, makings more efficient and even stirring. The tastes is more silkier and smooth. Easy to use. Specifications: Material: Glass, wood Style: wood color 400mL/Golds color 400mL/All color 400mL/Upgraded clear color 400mL/Upgraded rose golds 400mL Size: As show in picture Battery: 2pcs AAAbatteries (not included) Package Includes: 1x Self Stirring Coffee Cup note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.