The device has a battery life of up to seven days when in use and 30 days of standby time, with it taking two hours to fully ...

Compatible with iPhone and Android ... Stay on track and snap up this incredible deal on the Mingdaln Waterproof Smartwatch, costing only $30 at Walmart.

The terms water-resistant and waterproof are used pretty much interchangeably with fitness trackers these days. But, if you're looking to go for a dip with your smartwatch on, you'll want to make ...