Specifications:BrandKALOAD Product nameElectronic WhistleColorBlack,Orange,BlueSize121*33mmNet weight100gBattery3 x AAA batteries(Batteries not included)Features:-Uses: sports competitions (outdoors, sports events), emergency rescue (lifeguards), public places to organize gatherings warning command,..
Specification:Size 150*52*24mmBattery 1800mahWeight 170gVoltage5VCurrent 1AUse time30HStandby time30 MonthsFeatures:1. A variety of modes to meet various daily needs.2. Large-capacity battery, the longest standby time is 3 months.3. With a magnetic suction part on the back, you can free your hands a..