LED Source: White LED+Red LED Battery type: 3.7V 2000mAh Li-ion Battery (18650) Dimension: 59(D) X 57(d) X 129(H) mm Max output: 500lm Function: Short press: Top light White / Side light White - Red - Red strobe; Long press: Adjust light brightness RunTime: 1h30min Material: Plastic+Rubber