Devices are rated based on how much pressure they can withstand, not necessarily how deep you can take them. When I get to the pool, I start training in the car and leave a smartphone in the car because the cabinets are insecure.
Final Fantasy XIV: Drops, spills and cracked screens covered from day one. My only wish is it would vibrate instead of make a sound.
You'll need to swim continuously for at least 10 minutes for tracking to work, while swimming in a packed pool where you're not able to maintain regular movements can impact on tracking results. It's not essential, but it would stop you stopping and starting. But since the Speedo On app has been updated, things have got better and it's become a more reliable performer.
FREE Shipping. Waterproof versus water resistance explained.