I did consider the DB-36 and the the GB-5600. But I eventually ended up settling for the GB-5600 because I liked the square design. It does come with bluetooth

I did consider the DB-36 and the the GB-5600. But I eventually ended up settling for the GB-5600 because I liked the square design. It does come with bluetooth and other early "smartwatch"-features which I don't use, but the vibrating alarm is very handy. It was hard to find though.