I spotted the Riseman module manual online a few days ago and downloaded it for a quick look-see.
It made me wonder - who exactly is this watch aimed at? As discussed previously, it's not a true ABC watch. Without a compass to tell you which horizontal direction you're going in, it can be of use only to those who only need an altimeter to determine their vertical positioning. Off-hand I can only think of rock-climbers, mountaineers and, possibly, skiers. Hang-gliders at a push.