https://www.youtube.com/watch?v=v7Rb-4onMgg For full scale comparison check out this comparison chart from Acaia    To help with your brewing and firmware upgrades, Acaia offers a suite of apps that connect to your Bluetooth-enabled Pearl. The black version features a brighter LED display to provide better contrast while brewing FAST 20 ms response time provides ultra-fast response time and instant readings. ACCURATE & SENSITIVE Readability up to 0.1 g. The Acaia Pearl is sensitive to even weight changes resulting from evaporation and temperature. STABILIZATION Packed with laboratory-grade scale technology like adjustable zero tracking and creeping compensation. Tweak your scale's settings to your environment. TIMER In a dual display, both time and weight are shown on the scale. If paired with one of our mobile apps, the sync can track your times and graph your pour. AUTOMATED AUTO-OFF CUSTOMIZATION The Acaia scale will not shut down during coffee brewing. If desired, the time for an auto-off is customizable through our apps. RECHARGEABLE USB POWER SUPPLY A greener alternative power source, the lithium ion battery lasts up to 40 hrs