As expected, today Qualcomm took the wraps off its latest chipset intended for wearables. The Snapdragon Wear 3100 comes to replace the Snapdragon Wear 2100, which was getting pretty old in the tooth already. The good news about the new SoC is that Qualcomm promises some pretty nifty battery life improvements. Apparently you should get 4 to 12 more hours of usage from a watch using this chip, compared to one using its predecessor. The exact amount of extra operating time you'll take advantage of will obviously depend on factors such as display type, battery capacity, and device...
Source: https://www.gsmarena.com/qualcomm_unveils_snapdragon_wear_3100_chipset_for_smartwatches_with_improved_battery_life-news-33188.php
