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In terms of units, Fitbit has probably been the most successful so far (22m units sold in 2016). They don't get attention in the US, but the Mi Band from Xiaomi
by NoPiece 9y ago
In terms of units, Fitbit has probably been the most successful so far (22m units sold in 2016). They don't get attention in the US, but the Mi Band from Xiaomi isn't far behind.