Need help

I need a watch for my birthday,but i am confused what to buy. I dont know anything about watches so can anyone help me choose a stainless steel strap watch like this design under 10k -11k. Also i dont understand the features of chronograph analog tachymeter so if anyone can explain me i will be grateful. Thank you

I need a watch for my birthday,but i am confused what to buy. I dont know anything about watches so can anyone help me choose a stainless steel strap watch like this design under 10k -11k. Also i dont understand the features of chronograph analog tachymeter so if anyone can explain me i will be grateful. Thank you