Surface material: Soft-Touch Black Number of buttons: 8 Battery type: Li-ion rechargeable, RPC AE1102338P, 950 mAh, 3.7V Battery life: 16 hours with regular use, 20 hours with Battery Saver Mode Switches: SteelSeries 30 Million Click switches Mouse weight: 115 g Mouse length: 123 mm Mouse width: 69 mm Cable: 2 m Polling Rate: 1000hz, 500hz, 250hz or 125hz