made of high quality materials. 1200dpi, precise positioning, smooth operation Ergonomic design fits the palm, delicate hand feeling, comfortable to grip simple and lightweight design and wireless, easy and convenient to use classic button design, it is perfect for office, travel and home use Portable and compact wireless, it is also suitable for business trips Features: Model: M702 Type: Wireless Mouse mouse size: small mouse (≤ 100mm) Connection With Computer: Wireless Applicable models: Laptop Optical Resolution: 1200 Dpi number of buttons: 3 (keys) Interface: USB wireless transmission frequency: 2.4ghz Whether To Support Ergonomics: Support adjustable resolution: three gears and below Operation Distance: 20 (m) Work Mode: Photoelectric scroll wheel direction: four-way wheel Product Size: 99.41x61.0x38.0mm Product weight: 0.65 (kg) Program: BK 2.1 ic Optics: 3180c (no Light) return rate: r500 key switch: silent 3 million times