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Barely worn Mondaine Helvetica Smart Watch, leather strap, 43 mm case. Excellent condition. Needs new battery. Works with smart watch app MMT-365. Measures activity and sleep. More of an old school approach than an i-watch. Comes with box and instructions. Good review on this watch here: https://wornandwound.com/hands-on-with-the-mondaine-helvetica-1-smart-watch/