Specification:Model: AK47Cweight: 0.2 ozDiameter: 17mmThickness\uff1a1.5mmConstant current:1050maMaterial: two sides gold platedInternal four procedures:Low (10%) - High (100%)Low (5%) - Mid (30%) - High (100%)Low (5%) - High (100%) - Burst flashLow (5%) - Mid(30%)- High(100%)- Burst flash - SOSFeatures:It has reverse connection protection.Less than about 2.8V，it has automatic shutdown protection.without memory function， each time switch on，it will be automatically circulated to the next gear.Power supply for single lithium or 3AA， input voltage higher than output voltage between 0.2V and 1v，this section can be efficient and constant flow. Recommended to choose belowing 3.5V led ，The brightness are more wonderful.Package Included:1x circuit board