USBBattery
RedPurpleGreenBlue
$5.99

Which power source should I use?

USB

  • Must stay plugged into a USB power source
  • About 12 inches of wire
  • Remove from power source to turn off

Battery

  • Requires two LR41 batteries (included!)
  • About 3 inches of wire
  • Has a click on/off switch built in