1. Weight: About 100g / SizeL 11 * 31 * 31cm / IPX4 / Material: ABS+PCS

2. Functions:

a. Hand wave sensing

b. Adjustable irradiation angle

c. Adjustable headband tightness 

d. Multiple-level brightness adjustment(White light)

e. Could be held on hand or worn on head

f. USB charging, battery inside