Thank you for purchasing Ticwatch S & E
We are sorry to hear that you've been experience battery life issues with your watch. If you meet abnormal battery capacity, like a sudden drop or short battery life, please be assured that it is not an issue with the quality of the watch.
We advise that you use the watch until the battery is empty, then charge it up to full, and repeat this over 1-3 discharge and charge cycles - the battery capacity should improve.
If you have any doubts while using your watch, please feel free to contact our support team on the Mobvoi Official website. Thanks again for your support! Have a great day

Best,
The Mobvoi Team