Check there is a year to the day. No delivery problem but now after normal use and sluggish (about a hundred photos taken with) ... nothing! So I thought to change the battery but my watch after testing said (already!): "Useless, it is good ... it's a connection problem on which I can not act " Brief summary I have no more for my money ... a small device could've come in handy if it had held in time to avoid "buy one every year. I thought the Nikon logo was a guarantee of security, obviously not for the "gadgets" ...
