Type-C port, built in battery. Easy to use, just need to press on/off switch to activate device. Pet can walk around while enjoy our red lighting, 0 inches for best result. Use device 1-2 times per day for at least one week, and for a duration of 15 minutes treatment. Unplug device and store in cool dry area.
Maintenance: For cleaning we recommend using a damp towel or toothbrush to slightly clean your device. Make sure the device is unplugged from any power, cords disconnected and turned off. Only clean the fabric portion of the device and not the LED diodes directly.