Logitech G604 LIGHTSPEED Wireless Gaming Mouse – Sensor: HERO 16K Sensor, Up to 16,000 DPI – LIGHTSPEED Wireless / Bluetooth Technology – Battery Life: Up to 240 Hours (LIGHTSPEED), Up to 5.5 Months (Bluetooth) – Dual Mode Hyper-Fast Scroll Wheel – 15 Fully Programmable Buttons – Report Rate: 1000Hz 1ms (LIGHTSPEED), 88~133Hz (Bluetooth) – Onboard Memory – Mechanical Button Tensioning System – Weight: 135 (With Battery) – 910-005651 – 2 Years Limited Warranty