Cable -Free: No cords or dongle, connects directly to Bluetooth-enabled device via Bluetooth, operating distance up to 10 meters, bring you more convenience when you need to type | Rechargeable Optical Bluetooth Mouse: Built-in durable 450mAh lithium rechargeable battery can last up to 500 hours after fully charged, and standby time is super long with auto sleep and wake mode. Easily recharged through the included USB cable, no need to change the battery. | Long Battery Life Bluetooth Keyboard: Energy-saving design and automatic sleep mode allow up to 4 months between battery changes. (based on 2 hours' non-stop use per day) (2 X AAA batteries included) | Super Compatibility: Compatible with more than 99% Bluetooth devices Compatible with iPads, iPhones and Bluetooth-enabled Tablets, Laptops, and Mobile Phones, such as iPad 10.2 2019, iPad air 10.5 2019, iPad mini 5 2019, new iPad Pro 12.9/11, iPhone 11 / 11 Pro Max etc . Note: Need to update the system of your ipad and iphone to iPad OS13 and iOS 13 or above and Turn on the “Assistive Touch”-Important Setting - Accessibility - AssistiveTouch | Perfect Size:Just Big Enough for your fingers to enjoy a wonderful typing, and small enough to put it into your suitcase/handbag. And KLAMG Mall provides you friendly customer service and worry-free 1-year