Made of qualified materials, high quality, safe and harmless. High quality, low price and high cost performance. Easy to use, practical and durable. It is the first choice for working, learning, and gaming mice. Product: ergonomic vertical wireless mouse Style: charging, battery Color: As shown Size: 12.3cm*6.2cm*7.5cm   Specifications: 1. Ergonomic Design: The mouse is designed to reduce wrist pressure and prevent carpal tunnel syndrome. 2. Cool Shark Fin Design: The mouse looks like a shark fin and is fashionable, making it suitable for young people. 3. Charging Model: The charging model can be charged with a USB cable, while the battery model can be powered by two AAA batteries. 4. Two Styles: The mouse comes in two styles, one with a charging model and one with a battery model. 5. Protects Your Wrist: By using the mouse instead of a traditional mouse, you can protect your wrist from carpal tunnel syndrome. Package Included: 1* vertical wireless mouse 1*USB receiver 1*USB charging cable (charging model)