Description: --100% brand new and high quality. --Rotary switch, easy to use and operate. --Five colors --Mini size --Different colors make your pet and pet tanks more different. --Suitable for small pet tanks ▶100% brand new and high quality. ▶High quality plastic material, non-toxic, hard and durable. ▶Building block design, tanks can be stacked. ▶Multiple color choices to find the style that suits you ▶There is a hole on the side, so don't worry about the air not flowing. ▶Can release water, sand, etc, and will not leak. ▶No waste of space, mini size so it can be placed in the office, home, car, etc. ▶Suitable for fish, spiders, ants, reptiles, small pets. Specifications: --Size: 3*3*2.5cm --Color: Red, Green, White, Yellow, Blue --Battery Type: CR2032 3.0V Lithium Battery Coin Cells ▶Material: Plastic ▶Style: Block, Flexible Combination ▶Size: 120*80*105mm ▶Color: White, Black, Red, Transparent, Blue, Green, Pink, Light Blue, Yellow ▶Location: Office, Home, Car, etc. ▶Suitable: Small Pets such as Fish, Spiders, Ants, Reptiles, etc. Package Included: --1*Light OR ▶1*Block Tank Notes: ▶Due to the difference between different monitors, the picture may not reflect the actual color of the product. ▶Please leaving a message before you give the bad feedback, if the products have some problems. ▶Please allow 1-3mm error due to manual measurement. ▶Thanks for your understanding.