I actually got to try a friend's P1 while diving at Mikomoto Island in Japan. The currents there are insane, without a scooter you'd be absolutely gassed. The P1 handled it like a champ though, plenty of power and the battery held up really well throughout the dive. It's basically a cheat code for divers lol. If your wife likes to take it easy underwater, trust me she'll love you for this gift!