Specification

 Product Name Brain spa
 Description

Front: 810nm near-infrared LED
Side: Bone conduction speaker

 Size (WxLxH) 6.7x6x1.5" (170x150x40mm)
 Weight 6.7onces (190g)
 Charger DC 5V, 250mA / Up to 4W
 Battery Capacity 3.7V, 500mA lithium polymer battery
 Single Operation Time 30 minutes

* Not be used on people younger than 22 years of age.
* Do not stare at operating LED light for prolonged periods of time.