That would be nice, now how about my phone???
One of China's leading tech firms has unveiled two Android-powered smartwatches that it says can last about a week between charges.
That represents a substantial gain on alternatives that can struggle to run longer than a day.
The Geak Watch 2 models achieve the feat by using a hybrid screen that switches between a "high definition" LCD colour display and a "standby mode" battery-saving e-ink one.
Mmmm - very clever.