Description: Productmodel:This is a new product launched by A4TECH bloody company A4TECH bloody A91 👍Product guarantee: our store only sells 100% original authentic 👍Warranty service: Warranty provided by the local A4TECH bloody warranty center (contact our store for warranty) 😊Service attitude: Our shop provides each customer with the best quality products and the best after-sales service 🎉Priority purchase: Order now and you can enjoy a 50% discount. 🙀This price is only applicable to the first 15 customers 🎁Receive coupon discount: before ordering, you can go to our front desk to collect the discount coupon and then place the order 💝Order a gift: Our store will give every customer an elaborate gift🎁 🚛Logistics timeliness: Our logistics time is 5-10 days to deliver the products to your hands specification: Brand Model: A4TECH Bloody A91 Working method: optical engine Backlight: single light Report rate: 125~1000Hz/sec (4 segments adjustable) Resolution: 4000cpi (5 segments adjustable) Frame rate: 6666fps Acceleration: 20g~23g Tracking speed: 60~160 inches/second (ips) Key-press response: 0.2ms Number of keys: 8 programming keys Transmission method: wired Mouse interface: USB (2.0/3.0) Mouse cord length: 1.8 meters System support: WindowsXP/Vista/7/8/8.1/10