Main Features:● With RGB Symphony backlight● The top cover is made of aluminum alloy● Made of stamping, grinding, CNC, sandblasting, anodizing and laser engraving● Keycap with PBT + PC two-color injection● Characters are designed with light transmission Brand: Xiaomi Material: Aluminum Alloy Type: Keyboard Bluetooth Version: Not Supported Cable Length (m): 1.8 m Connection: Wired Interface: USB 2.0 Key Number: 104 Keyboard Lifespan ( times): 500 million times Response Speed: 3ms Keyboard Type: Mechanical Keyboard Package size (L x W x H): 45.50 x 17.00 x 4.00 cm / 17.91 x 6.69 x 1.57 inches Package weight: 1.152 kg Product size (L x W x H): 44.00 x 13.30 x 4.00 cm / 17.32 x 5.24 x 1.57 inches Product weight: 1.100 kg Package Contents: 1 x Keyboard