Features:100% brand new and high qualityIt needs a Brick-Separator to open it,turn on the light or turn offThere are three styles: red and blue alternate, only white light, colorful change, you can choose to buy according to your needsThe battery can be replaced, you need to unscrew the screws yourselfUse it to add sparkle to your work100% Satisfaction Guarantee,If there is any problem with the use of the product, please contact me and solve the problem.For you to Resend or refund, Please don't give a low score directly.You and I both lose money if you only give bad reviews.Thank you, Dear customer Warning: this toy is not suitable for children under 3 Years Old Power supply: 2x AG13 button battery(include)Color: see picturesMaterial:plasticSales Way:Retail, Wholesal,Drop ShippingSize: One SizeLength:1.6cm(0.63in)Width:1.6cm(0.63in)Height:1.4cm(0.55in)Quantity: 5pcs Note:If you have big quantity (only need over 50 dollars), please feel free to contact me, I will give you SURPRISED PRICE(The more the quantity, the lower the price), thanks Size For Manual Measurement, there may be a 0 to 2 cm error, belongs to the normal phenomenon.And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank youPackage includes: (Without retail package)5 x Bricks