The Opus Vaporizer from Caligo is packed full of exciting features. Inside the aluminum alloy body, you'll find a 700 mAh battery with a built-in battery life indicator so you're always prepared for your next session. The easy-to-use power settings include both auto inhale or button functionality, and you can enable or disable the haptic feedback feature. The Opus also includes an inhale duration time, puff counter, and cart error/low power alerts.