Strap Size: 29-35mm

Power type: battery powered

and the camera will start to record automatically

Manufacturing Process: Machine Made

Features :

USB Air Purifier, Negative Ion Air Purification Function Sports & Outdoors Strap Size: 29-35mmProduct Category: USB Air Purifier Features: The negative ion air purification function effectively removes the smoke in the air and makes the air fresher. The unique computer USB power supply mode is convenient and practical; it is compact and easy to carry around. Rotating cover USB plug LED lamp cover Negative ion hole Instructions: 1. Turn the USB case. 2. Insert the USB plug of this unit into the USB jack of the computer. At this time, the