It is highly overpriced watch. Balance 2 with the latest update has all the software of T-Rex 3 Pro and not only that it has golf app which T-Rex 3 Pro has not. Balance 2 has dual speakers, two straps in the box against one fo T-Rex 3 Pro. Balance 2 has also sapphire glass and 32gb of storage, it also supports deep diving up to 45m but it cost more than 100 bucks less and T-Rex 3 Pro for 100 bucks gives you only rugged design and external torch. Nice!