Description: Long lasting battery life: 1200mAh large-capacity rechargeable lithium battery, intelligent power saving, charging time 2-3 hours, working time 1-2 months, standby time 3 months. Scientific design: The shape is designed according to ergonomic principles, with a comfortable feel, relieve wrist pressure, and effectively protect wrist health. 2.4G wireless connection: The chassis can be easily disassembled and installed. Optical sensor, 4-speed DPI setting, sensitive to use, suitable for most common surfaces. USB Adapter: Plug and play, no need to install pairing. 6 lighting effects. Roller: Soft rubber wraps the roller, which can effectively increase the comfort and reduce the discomfort caused by friction with the hand. Specification: Model: HMW-15 Photoelectric resolution: 3200 (dpi) Number of keys: 7 Interface:USB Wireless transmission frequency: 2.4GHz Adjustable resolution: four files Operating distance: 10m Mouse size: rat (≥120mm) Connection with computer: wireless Applicable models: desktop Working method: photoelectric Wheel direction: four-way wheel Features: Ergonomic Built-in battery: 1200mAh Charging time: about 3.5 hours Selling point: RGB multi-color lighting effects Product size: 148x99x95mm Weight: 22.9kg Size Chart: 148x99x95mm/5.83x3.90x3.74inch Package Includes: 1x Mouse 1x Charging Cable 1x Receiver 1x Manual Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!