Main features:- Ergonomic design offers comfortable hand feeling, it feels great to grasp or just touch this wireless mouse- Dirt-proof and skin-friendly coating- Meticulously crafted bottom, the foot mat is a full ring, smooth to slip with moderate resistance, great for using on your desk- Integrated battery cover on the top, easy to take out the battery or USB receiver- Built-in 1200DPI high precision infrared sensor, low power consumption; left and right key support 5 million times clicking, long-lasting and durable- Great partner for your leisure time, suitable for office or home use- Built-in 1 x AA battery ( included )Brand: Xiaomi Model: WSB01TM Type: Mouse Material: ABS Features: Mini Mouse Type: Ergonomic Color: BlackCable Length (m): No Connection: Wireless Connection Type: 2.4GHz Wireless Interface: USB 2.0 Resolution: 1200DPI Coding Supported: No Mouse Macro Express Supported: No DPI Adjustment: Not SupportBattery Type: AA Power Supply: BatteryPackage weight: 0.133 kg Product size (L x W x H): 5.60 x 9.81 x 3.44 cm / 2.2 x 3.86 x 1.35 inches Package size (L x W x H): 7.60 x 11.81 x 5.44 cm / 2.99 x 4.65 x 2.14 inchesPackage Contents: 1 x Xiaomi WSB01TM Wireless Mouse, 1 x AA Battery