Smartwatches, intelligent homes and drones that follow users wherever they go are on show at Berlin's mega consumer electronics fair, which opened its doors to the public on Friday. Samsung, Huawei and Motorola pick spherical faces for their latest smartwatch offers, giving them a distinctly different look to arch-rival Apple Watch, which has a rectangular face. The Android smartwatch makers are hoping that their models will claw back some market share from Apple, which shipped about four million smartwatches globally in the second quarter, market researcher Strategy Analytics estimated in July.



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