1、Made of high‑quality materials, and the wireless keyboard is strong, durable, light in weight, waterproof and dustproof. 2、The keys of this wireless keyboard are quiet, typing fast and feel good, and are easy to operate and convenient to use. 3、19in widened and enlarged processing makes people have a better experience, and has more keys and wider keys than ordinary 7in keyboard. 4、Portable and ultra‑thin, and convenient to carry on travel or business trip, and can be used with smart phones, tablet computers, laptops, and desktop computers. 5、Equipped with TPU silicone soft shell, built‑in a pen slot, has good anti‑drop effect and can effectively protect the keyboard. 1 x Wireless Keyboard1 x Protective Cover1 x Charging Cable Item Type: Wireless KeyboardBT 3.0: Standard MICR InterfaceWithin 10 Meters: Effective Operation Can Be AchievedModulation Method: GFSKWorking Voltage: 1.8- 3.6VWorking Current: < 2.0mAStandby Current: 0.3- 0.5mASleep Current: <40UACharging Current: ≥200mAStandby Time: >30 DaysCharging Time: <2 HoursBuilt-in Lithium Battery Capacity: 110mAhSustainable Working Time: 44 HoursButton Force: 80±10gButton Life: 5 Million ClicksWorking Temperature: -10-55℃Protective Cover: Suitable for IPad Pro 12.9in (2020 Models)