The Helix Max rear LED is a high-performance lighting solution for cyclists seeking superior visibility and safety when riding at night or in low-light conditions. Combining advanced technology with a wide range of modes and options, the Helix Max ensures a reliable and safe riding experience for all types of cycling. The Rigel Max front light can be helmet mounted using the supplied bracket or can be fitted to handlebars or a Go Pro style mount.SpecificationCOB red LED;Max. Lumens: 250LM (FL-1 tested);Max.Runtime:109 hrs (FL-1 tested);Max. Intelligent operation standby time: 140 hrs;Battery Type : Li-PO built-in;Recharge Time: 2:30 hrs;Size ( W x D x H):  22 x 19.5 x 81 mm;Weight: 40g; Features5 modes: DAY FLASH / STEADY FLASH / FLASH 1 / MODE 1 / MODE 2;CNC Aluminum heat sink casing;Intelligent brightness function;Intelligent motion sensing function;Intelligent parking function;Lock Mode;Auto safe mode;Day flash mode;Mode memory function;Variable Lumen System;Low battery, charging and fully charged indicator;Automatic fully charged cut-off system;Side visibility;Water resistance (IPX 7);Rechargeable lithium polymer battery;USB Type-C charging cable;