Annunciator of safe for driver

Model Number:STK-01(tweet type) STK-02(concuss type) Working principle: Our patent product, electronic balanced anti-drowsy alarm, which is popularly called nap-zapper, is a high-tech product that works on the principle of electronic balance. It fits on the ear of a driver when he is drowsy or on a long trip. Once a driver feels sleepy during his driving and his head nods forward, the alarm will beep to arouse the alert of the driver and the passengers. It stimulates the nerve to be exciting and eliminates the sleepy feeling, therefore, avoid traffic accidents. It's light-weight (16g) and comfortable enough even with glasses. Technical index: 1) Alarm sensibility: alarming angle is: 15 - 20° (adjustable) 2) Rated voice pressure: 110DB 3) Power source: DC 6V (AG 12 x 2) 4) Working current: 0 (not in alarming state), less than 25Am (when in operation) 5) Color: silver gray, yellow, green, and red 6) Dimensions: 75 x 46 x 1mm 7) Weight: 16g 8) Life span of battery: 1 year leather packaging with color box 1.Outer packing(inner packing:blister packing): 200pcs/ctn Carton size: 39 x 33 x 29cm Weight: 12kg2.Outer packing(inner packing:colour box packing) Quantity : 50 / 500 PIECES NW: 6.5 KG G.W: 10.5 KG Meas: 46x26x33.5 CM