Product Description: Power: 2xAAA battery (not included) Color:Black,Blue,Red,White,Silver,Purple Size:approx:118mm*58mm*35mm/4.64"*2.28"*1.37" Features: 1. The mouse adopts the USB receiver the mouse button, and it is easy to install and can play when plugging USB receiver. 2. The folded design is convenient and you can carry it around easily. 3. The mouse can turn off automatically after being folded, and it can turn on automatically when unfolded. 4. The 2.4GHz wireless transmission up to 10 meters operating distance. 5. The design is in line with ergonomic and has strong compatible. Package Include: 1 x 2.4Ghz Foldable Wireless Optical Mouse for Laptop PC 1 x USB Wireless Receiver(hidden in mouse) Notes: 1. Please allow 1-3 cm difference due to manual measurement and 3-5 g for the difference between different colors. 2. Due to the screen difference, the color may be a little difference from what you expect, please allow it. The mouse adopts the USB receiver the mouse button, and it is easy to install and can play when plugging USB receiver. The folded design is convenient and you can carry it around easily. The mouse can turn off automatically after being folded, and it can turn on automatically when unfolded. The 2.4GHz wireless transmission up to 10 meters operating distance. The design is in line with ergonomic and has strong compatible.