Powered by solar or USB; Power switch on the side; The white button in the front is for controlling the 5 white light LEDs under the blades; Also can be used for lighting; Comes with a lanyard、 can be hung on neck、 easy to carry.
Dimensions: 4.84 in x 2.52 in x 1.46 in (12.3 cm x 6.4 cm x 3.7 cm) Weight: 3.21 oz (91 g)