Key Finder (Keyfinder) is widely used in the advertising market, cheap novelty gifts, basic principle, key finder induction to beep beep will sound, sound, and LED lights flashing. If the key is hanging together and is convenient for you to find the key to a sound control mode, the key is to find the induction frequency is 1-4KHz, the sound frequency we whistle basically is in this range, whistling sounds do not need to use other instruments, simple and convenient, so we called "whistle finder", whistling is ring, not only was the sound of whistling, other voices, waves will trigger it ring.

Name: water finder +LED lamp
product size: 50*36*14mm
material: ABS
battery: AG3 button battery or LR41

conventional color: white, black, blue, red

packing: blister card packaging bags or OPP