Fitbit Charge HR Strap Retainer

Strap Retainer for Fitbit Charge HR (not sure if it's suitable for other models)

My wife's Fitbit strap broke so it was 3D printing to the rescue again, she now can't even remember the day she said to me "What on earth do you want a 3D printer for!".

Print in Flex Fillament

Update!: v2 released already....apparently sharp corners are no good.