Specifications Dimension: 119*64* 41.5 mm Interface: USB DPI: 500/1500/3000/5000 Polling Rate: 1000Hz LED: 7 color LED Logo Click Force: 0.4N - 0.8N Click Life Span: more than 50 million times Click Response time: 5ms Cable Length: 1.6 m Weight (Including Cable): 140g