Specifications:1. Brand: Jiushark2. Model: JSJ-13. Color: black, silver4. Weight: 553g5. Material: aluminum alloy6. Size: 360 * 85 * 15.5mm7. Applicability of Keyboard:87Features:1. The bottom adopts two large-area high-quality silicone pads, which can not slide and fix the keyboard without displac..