Meet the Acaia Pearl: a smart coffee scale that lets you brew coffee like a pro. It has a fast response time of 20ms to provide you with instant readings. The Acaia coffee scale has an elegant, minimalistic design and works with iOS and Android devices. It also has a stopwatch.
The Acaia Pearl has a bright display and accuracy of up to 10th of a gram. The rechargeable battery lasts up to 30 hours. Costs $150 at this time.