size 1 means US Chargersize 2 means US Charger+EU AdapterFeatures: Light weight and portable with cordless. With 4000mA lithium battery， it works anywhere. Rechargeable battery can be charged by standard power source. The light beam direction can be adjusted by its pivoting design. Metal rack， lightweight， cordless， waterresistant IP65， portable and rechargeable， firm frame. High brightness， low consumption， ease to use. Excellent waterproof， suitable for outdoor environment， adverse weather conditions except for divingUsage:go fishing，camping party，outdoor working light， seaside BBQ，suburbs camping，emergency，maintenance， garden work.Specifications:Light Source: Cree XM-LLuminous flux: 2400LM in high and strob LED lifespan: 50，000 Hours Modes: high-low-strobe(red，blue)IP Rating: IP65Power: 30WColor of light: whiteBeam angle: 120 degree Working voltage: over 3.7V Adapter input: 100-240V AC Water resistant: IP65Battery requirements:3 x 18650 3.7V Li-ion Batteries， dismountable，Net weight: 707gLED indictor:Charging:LED Indicator is redFull charged:LED Indicatorturns to greenPlease use the charger equipped with the lampPlease do not turn on the light when charging.Please do not charge the lamp over 24 hours.Please do not disassemble the lamp.Please recharge the lamp every six months when in stock.Package list:1x Rechargeable Flood Light 1x Charger 3x 18650 Rechargeable Battery