Flipkart SmartBuy M7030 Wireless Optical Mouse with Bluetooth  (2.4GHz Wireless, Bluetooth, Black and Grey)

I purchased it for my samsung galaxy tab A7 and it works perfectly fine using bluetooth.
No lag at all.
It has feature of automatic sleep/standby which is not mentioned anywhere. It goes into sleep mode approximately after 15 minutes of inactivity. It is very useful feature and you don't need to switch off it every time to save battery of mouse as it will go to sleep mode automatically.
Initially I was doubtful about the quality as it comes with very low price. But after receiving product I ...

Pros:
1. Clicks are good.
2. Very good response on normal surfaces.
3. Auto power off functionality is efficient, you do not need to turn it off. You stop working, it automatically turns off.
4. Light weight.
5. Shape is very comfortable, not very large or very small. just perfect.

Cons:
1. Clicks are good but a little noisy.
2. Scroll seems a little cheap.
3. No DPI control. (What appears to be DPI button is to switch between Bluetooth and 2.4Ghz modes.)

Hope, the battery backup and life o...

Works flawlessly, i use it with bluetooth connectivity.
Additional buttons are much helpful, i love them. It is ergonomic if you are wondering about comfort.
Only down side is it is less durable and build quality is not great for example on/off switch my mouse is feeble, but you can't complain for the price range.
I got it for 399 but it has features of premium mouse.
It was a great deal and i recommend it to everyone who can can compromise for the build quality.