They should wear it on their left wrist.
left
Most people wear their watch under the wrist bone. <3 welcum.
The left wrist is the watch wrist for both men and women.
Bracelet, watch, bangle
On his left?
most women wear a watch on the right side if they are LEFT HANDED a woman wears a watch on the left SIDE IF SHE IS RIGHT HANDED
Wherever she prefers.
OKay I found out, it is left wrist
Whichever wrist he feels comfortable with.
The hand you don't write with.
Typically a man wears a watch on the wrist opposite his writing hand; so a right-handed man would wear a watch on his left wrist. To balance, this man would wear the bracelet on the right wrist, or perhaps not wear the bracelet at all.