I have checked these
1. Logitech K375s/ Easy-Switch for Upto 3 Devices, Slim Bluetooth Laptop Keyboard (Black)
2. Logitech K380 / Easy-Switch for Upto 3 Devices, Slim Bluetooth Tablet Keyboard (Rose)
Also there are few in 1k range
1. Flipkart SmartBuy K931T Bluetooth, Wireless Multi-device Keyboard (Sky Blue)https://www.flipkart.com/flipkart-smartbuy-k931...
2. RAPOO 8000M / Multi Mode Keyboard and Mouse Combo (4 Device Connectivity) Wireless, Bluetooth Multi-device Keyboard (White)
https://www.flipkart.com/rapoo-8000m-multi-mode...
3. Portronics POR-373 Key2 & Mouse Combo Wireless Multi-device Keyboard (White)
https://www.flipkart.com/portronics-por-373-key...
4. HP CS10 Wireless Multi-Device Keyboard and Mouse Combo,USB Plug and Play with 2.4 GHz Wireless
Stick to Logitech, I have MK370(non-R) wireless kb mouse combo which is very good but unfortunately this model is no longer sold & instead replaced by MK270R which is not as good. You can check this thread for experience of someone using MK345.
https://www.desidime.com/deals/logitech-mk270r-...
I have checked these
1. Logitech K375s/ Easy-Switch for Upto 3 Devices, Slim Bluetooth Laptop Keyboard (Black)
2. Logitech K380 / Easy-Switch for Upto 3 Devices, Slim Bluetooth Tablet Keyboard (Rose)
Also there are few in 1k range
1. Flipkart SmartBuy K931T Bluetooth, Wireless Multi-device Keyboard (Sky Blue)https://www.flipkart.com/flipkart-smartbuy-k931...
2. RAPOO 8000M / Multi Mode Keyboard and Mouse Combo (4 Device Connectivity) Wireless, Bluetooth Multi-device Keyboard (White)
https://www.flipkart.com/rapoo-8000m-multi-mode...
3. Portronics POR-373 Key2 & Mouse Combo Wireless Multi-device Keyboard (White)
https://www.flipkart.com/portronics-por-373-key...
4. HP CS10 Wireless Multi-Device Keyboard and Mouse Combo,USB Plug and Play with 2.4 GHz Wireless
https://www.amazon.in/HP-Wireless-Multi-Device-...