These are brand new, never opened, and are offered as a set or separately. Built-In Rechargeable Battery – 80 Minute Battery Life • Temperature Range – 120°F - 145°F • Smart LED – Indicates When Beverage has Reached Your Perfect Temperature • Safe to hand wash – Fully submersible up to 1 meter deep. • Ember App – Set Your Temperature and Customize Presets. iOS and Android compatible. Price of one is $130