acrylic , is sturdy and , not easy to and fray, with strong toughness and better reflective effect. Multifunctional survival can be widely applied for various occasions, such as for cars, outdoor adventures, mountain climbing, camping, fishing, and so on. The small adopt built-in aiming , which is great for outdoor survival activities, long-distance communication in the field, sending reflective survival , . The can be applied normally on cloudy days or at night when there is light, and can also be applied as at ordinary times. is essential for outdoor survival activities, of the five major of outdoor survival is generating device.