Hello, only a true comparison with other options can help. Tested by myself, because I do not rely 100% on other opinions, I have held my own tests exactly once. So everyone can decide for themselves what seems important. Possession of the Gear S for almost 4 weeks, and I can tell so far, it is worth every euro. ACCU: the Accu display area (red area) announces that the Gear 15% residual charge is present, with a warning and a display to confirm recharge or power saving mode. I then always charged the same with the 15% remaining power. But does not report when it reaches 100%. !! There are about 2 hours. But there are also relatively reliable. OPTION AUTARK: - set to automatic brightness and flight mode (offline) is activated. No GPS - no mobile reception. But there were carried out per day 4 times pulse measurement. Uptime to 15% residual charge were reached again, so recharge is 55 hours. Of course 24hours arm. OPTION switched Sim card - also Bluethoot was activated, but no hits from me about the clock or the S5 to the clock of mine triggered, GPS was made, (set to airplane mode overnight 22 ° ° ° ° -8), 4 again times spread pulse measurement during the day. This time is the operating time 43 hours to back 15% residual charge has been reached. The clock also displays navigation maps but to positioning also display continuously so Revolving position Gear with Smartphon must be connected. Watch Out !!! This draws significantly on both accus. but it has not been extensively tested, noticed only on a short distance. My feeling the Gear would be so exhausted after about 4 hours. But in turn is also understandable. The weather display will also want a permanent connection to be up to date. Charging the Gear with only the charger from the 15% residual charge without electricity. After about 1.5 hours, the Gear stops at 66% charge. So to bridge it is very well suited to load then finished with power supply. A must is the calculator app. The voice memo app with the blue micro is not bad either, converts the language to in text.
