HRM-tri battery swap

On today's run a message popped up on my watch that the Heart Rate Monitor battery was low. It may well be linked to the cold weather but clearly it must be past its best. Luckily I keep a stock of CR2032 3V batteries in stock. There's a YouTube video of the process if, like me, you're not sure where the instructions are at home:

Note the the official instructions include a few extra tips.