Choosing a modern wireless keyboard?

Question

Keyboard

Advise, please, a modern wireless keyboard.
Requirements:
1. NOT batteries (batteries, usb charging and / or solar panels)
2. Ability to connect both Windows PC / laptops and Android tablets.
3. Graceful, straight. NOT bulky. NOT curved, etc.
4. Numpad is desirable but not required.
5. The price is reasonable (up to 2000-2500 rubles)
upd
Logitech Wireless Illuminated Keyboard K800 is good. But the size (487×195×27 mm) and the price...
While I'm looking towards the Logitech Bluetooth Illuminated Keyboard K810. But the price...

Answer 1

Look towards logitech www.logitech.com/en-us/product/k750-keyboard?crid=26
www.logitech.com/ru-ru/product/bluetooth-illuminat...

Answer 2

Logitech keyboards fit your parameters
www.ixbt.com/peripheral/logitech-k800.shtml