Bigmai Compatible with Xiaomi Mi Band 3 Replacement Band, Replacement Strap for Women Men Kids

i made a video the other day to see if the face of the me band 5 would fit into the strap of the mi band 4 the answer was no not really it leaves a gap or a lip around the top edge someone asked me if i could test it the other way around to see if the face of the mi band 4 would fit into the strap of the mi band 5 so i'm going to do that i've got the me band 3 4 and 5 here so i'm going to swap them all about and see what happens so pop the five out pop the four out and put four into a strap of the five and it's a similar but different kind of a problem so you have again a gap around the top edge try and focus on that up here it's more of a curved shape gap than the other one i can try and push the strap upwards try and push the strap upwards like that to make it fit but as soon as you move it about it tends to just slide right back right back down again it doesn't look like it's going t