5.Built-in software solutions with Bluetooth human interface device and comply with the standard version of the Bluetooth SIG bluetooth 3.0. wireless Bluetooth 3.0 interface. Use with non-BT equipped PC or Laptop need a USB Bluetooth adapter;.
eBay
Wireless Bluetooth Slim Keyboard and Mouse Portable USB Rechargeable Cordless Silent Keyboard Mouse Set for Mac PC Laptop
Aliexpress UK
AJAZZ 308I. Simply press FN+C to enter Bluetooth mode. 60% LAYOUT. 65% LAYOUT. 75% LAYOUT. 80% LAYOUT. 96% LAYOUT. The wireless office slient keyboard has a smart sleep mode.
eBay
AJAZZ AK992 Gaming Mechanical Keyboard RGB 100 Keys Hot Swap Keyboard 5.0 Bluetooth Wireless 2.4G USB for PC Gamer Desktop
Aliexpress UK
(Note 1:If You Need to Use Touchpad Mouse,Your iPad System Need to be Upgraded to IOS 13.4orAbove（iPad Air 1 Unable to Upgrade to IOS 13.4). Support IOS, Android and Windows system, this viable wireless keyboard for most tablets and smart phones like paraIPhone, paraIPad 2018 2017, paraIPad Pro, paraIPad 2/3/4, paraIPad Ar 2 1, ParaSamsung Galaxy Tab, for GALAXY Note, for Nexus 10, for LG, for Nexus, for Huawei, for ZTE etc.
eBay
Rii Wireless K22S Bluetooth Keyboard Rechargeable Mini Keyboard with Multi-Touch Touchpad,Compatible PC, Mac, Laptop, Windows
Aliexpress UK
5.Built-in software solutions with Bluetooth human interface device and comply with the standard version of the Bluetooth SIG bluetooth 3.0. wireless Bluetooth 3.0 interface. Use with non-BT equipped PC or Laptop need a USB Bluetooth adapter;.
eBay
Rii Mini Bluetooth Keyboard With Touchpad Backlit Portable 2.4GHZ Wireless Keyboard For Smartphones Laptop/PC/Windows/Mac/TV Box
Aliexpress UK
Suitable for smart phone, tablet pc, which has BT function, stable and fast connection. With included 2.4GHz USB adapter, plug and play, 2.4GHz wireless connection is suitable for laptop and notebook use.
eBay
Portable Wireless Bluetooth Keyboard Ultra Thin Quiet Click Keyboard for Smartphone PC Laptop Tablet
Aliexpress UK
Compatible with a wide range of devices including Mac, iPad, Windows XP/7/8, and Android systems, this keyboard seamlessly adapts to your tech setup, eliminating the hassle of switching between different keyboards.
eBay
Mini Bluetooth Keyboard with Touchpad for Android IOS Windows Three Fold Wireless Keyboard for Macbook PC Laptop Tablet Phone
Aliexpress UK
1 x Bluetooth keyboard. Bluetooth 5.0, better compatible with more device. Bluetooth: 5.0. Standard English keys, 10 digits, and function keys. Retro key design. We do not provide pick-up service.
eBay
Folding Wireless Keyboard Touchpad Keypad Bluetooth Rechargeable Keyboard with Leather Case for Windows Phone PC Table
Aliexpress UK
Touchpad size:54.8 44.8mm. Keyboard Folding Size:152 98 16mm. 1 Folding Keyboard. Keyboard size:304.5 97.95 8mm(open). Keyboard weight:197.3g. Keyboard Layout:63 keys. Wake-up mode:any key. 1 Charging cable.
eBay
GravaStar K1 Cocoon Breaking Mechanical Keyboard Wireless Bluetooth Tri-Mode Esports Gaming Keyboard For Pc Gamer Accessories
Aliexpress UK