Features: 1.Independent strong light 3W flashlight, with three modes of long light SOS and burst flashing; 2.Independent ultrasonic button function; 3.Independent Beep sound button function; 4.The actual environment can reach 10 meters; 5.3 channel switching; (1 fixed frequency 2 gap frequency conversion 3 random frequency conversion) 6.Configure power display led; 7.Configure ultrasonic working indicator; 8.Large battery 1200Mah, power saving function, long standby time of 140 days, normal use up to 20 days, fast charging in 2 hours; 9.The whole machine has CE/ROHS/FCC/UN38.3/certification; Specification: Color box size: about 175*46*46mm/6.89*1.81*1.81in Single gross weight (including packaging): about 135g Packing quantity: 100pcs 1 carton net weight: about 13.5kg Gross weight of 1 box: about 14.2kg Carton size: about 490*370*250mm/19.29*14.57*9.84in Packing List 1*Dog Drive 1*Data Cable 1*Lanyard 1*Instruction