Overview: Model: Small Sun ZYC61 Features a Cree XR-E P4-WC LED light Powered by 2 x 1.2V/1.5V AA batteries Power input voltage: 1.5V~4.2 V Single-mode tailcap clicky switch 80~100 lumens maximum brightness (manufacturer rated) Regulated driver circuitry 800m A circuit current output (manufacturer rated)1.5 hours estimated total runtime (manufacturer rated) Plastic lens & plastic textured/OP reflector Strap & carrying clip included Specification: Weight Approx:79.7g Size Approx:2.9 x 2.9 x 15.6