【Scientific Ergonomic Lightweight Design】Use DAREU unique vertical wireless mouse to place your hand in a natural handshake position to prevent forearm twisting and muscle strain reduction. 117*75*67.5mm, 89g (not include battery) | 【Comfortable Hand Feeling】The surface of the vertical mouse is made very smooth and sweat-proof after special treatment by DAREU, preventing slippery hands after prolonged use. | 【2.4GHz Wireless & Quality Assurance】No messy wire, 2.4G wireless transmission up to 10 meters. DAREU vertical wireless mouse has passed strict quality inspections, which is more durable. We provide a 1-year warranty. If you has any problems, feel free to contact us at any time and we will help you. | 【Unique Wing Tail Bionic Tray Design】Firstly, DAREU unique Wing Tail Bionic Tray can carry the weight of hand, avoid the inability of hand to receive force in the air and increase the pressure on the arm. Secondly, it can reduce the friction between the palm of hand and desktop, thereby reducing the pain. Finally, the specially designed feathery stripes on the tray can be non-slip. | 【American Blackbird Theme Design】Being in a wonderful forest world, where it is colorful, free, comfortable, leisure and carefree, American blackbird is combing itself feathers. Let people forget all troubles and fatigue, and release themselves to the fullest!