Dear Customer: Welcome to Dreamerhouse Store.Welcome to place order. If you have any questions,Please CONTACT US. we will reply you as soon as possible! Shipping Detail: All our Products Have stock ，We will ship within 72 hours of receiving your order Please confirm your ADDRESS AND MODEL carefully once you make the order.If the ADDRESS AND MODEL is not right, Please cancel the order before shipping ⚠️ Please CHOOSE THE CORRECT variation so we can avoid mistakes. ⚠️ If the item you received is defective, please contact us immediately. ✅【Product】:Original Rechargeable Wireless Mouse ⭐【Type】: rechargeable ⭐【Color】: Black ⭐【Wireless Transmission Distance】: ≤10m ⭐【Wireless Frequency】: 2.4GHz ⭐【DPI】: 800/1200/1600DPI ⭐【Interface type】: USB ⭐【Number of buttons】: 4 ⭐【Number of rollers:1 ⭐【Operation Method】: Opto-electronic ⭐【Working Time】: 20 days Description: wireless transmission, operation distance is up to 10 meters Mini smart USB receiver, auto connection, plug & play and no need to pair adjustable DPI speed: you can control the speed more freely Ergonomic design and low noise, more comfortable, better usage; Suitable for various terminal equipment, such as laptop, desktop, smart TV etc ✅If there is a problem with product quality, Please contact us as soon as you receive the package. We will do our best to solve problems for our customers.