I have a Bip watch as well. I actually bought a fancier one, but the Bip has a display that is on all the time, and after 5 years of use still has a battery life of about 5-6 weeks!
It tells the time, buzzes when I get a phone call, and tracks my steps. That’s about all I need.
It's Over for Fossil Smartwatches (www.droid-life.com)