A three-press safety activation button keeps the Aspen Slim accident-free in your pocket or bag. Its powerful, high-purity graphite 720mAh battery packs plenty of punch and stays that way for long satisfaction, thanks to ultra-conductive contact points and energy-conserving microcontrollers designed in-house by Boulder.
Recharging the Aspen Air is quick and painless through the supplied Micro USB cable and takes only 60 minutes. The LED ring at the base of the battery gently pulses to let you know that it's charging.
