The baseline for watches is changing the battery every 3-5 YEARS! This modernity of charging watches daily is a pox on humanity brought on by Apple.

Pebble (and Fitbit, and others) were always in the "week-plus" timeframe for charging. Meeting the "minimum bar" of 14-17 days battery life (of the OG pebbles) is successful. Shooting for "30 days" is definitively best-in-class performance for smart-watches!