Rato A4Tech Gaming V-Track Wireless R4

No lag technology: Provides the smoothest cursor motion during game play. 20 m operating range. Adjustable between 15 and 20 meters. Far operating range setting provides best RF quality. Super-Combo7. Custom macros with 7 fully programmable buttons; Perform stunts to win the games effortlessly. 5 modes selection. Set up custom macros for your games in each mode. 160 K onboard memory. Stores custom macros into the receiver. Perform them at any time even no Oscar software is needed. 2 ms response, 4X more smoothly. Designed with extreme fast report rate up to 500 Hz. Oscar classic macros platform. Upload or download your favorite macro commands via X7 website www.x7.cn. Specifications: Acceleration: 30 G/sec. IPS speed: 75 inch/sec. Report rate: 125_250_500Hz (2 ms). Key switch response time: 3 ms (Regular mouse: 16ms). Sensitivity: 100~3000 CPI (5 free-adjustable levels). Default sensitivity?400 - 800 - 1200 - 1600 - 3000 CPI. Package contents: V-track Wireless gaming mouse, Multilink-receiver(Red), USB extension cable, 2 AA alkaline batteries, CD (5-Mode Oscar Editor, user manual).