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BG131740421 you only have to gently press the top of the thermos, as for the battery, i'm not really sure...how you can change it...i didn't tried to open the bottom of the thermos cap

2021-03-23 04:31:57 Helpful (1)
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JapanJeeva Does this support APP Wearfit 2.0? This is a fantastic APP as I have the Temperature watch!

2020-08-27 07:13:53 Helpful (1)
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