ABS chocolate key core, fine craftsmanship, comfortable and durable Using PU leather material, high-grade and stylish With Fn combination multimedia key function Type-C charging interface design, with built-in 250mAh rechargeable battery Magnetic design for easy installation and removal Suitable for Microsoft Surface Pro 8Xnbsp Specificationnbsp Support protocol Bluetooth 3.04.05.0 Lithium battery capacity 250mAh Working environment temperature -10 to 55 Charging time 2-3 hours Use time 95 hours Standby time 60 days Button life 500 million times Effective operating distance 10 meters Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!