Features:

Replaceable anti-glare lens to meet the needs of different riding scenarios
Side lighting for better side visibility
3 brightness settings, easy to operate
Powered by a 2,600mAh battery, ensuring long runtime
USB-C fast charging and discharging
Internal thermal management ensuring consistent output at high levels
Easy-to-read multiple battery power indicator
Lock function to avoid mis-operation
Universal Garmin quarter-turn mount system, easy to put on and take off
Memory function saves the last selected mode
IPX6 rating, heavy rain resistant, all weatherproof

 
Available in: 

900 lumens max of verified output with high efficiency LED

1800 lumens max of verified output with high efficiency LED

 
SF 1800 Output: 

Mode: Low

Lumens: 500
Run time: 11H

Mode: Mid

Lumens: 1000
Run time: 4H

Mode: High

Lumens: 1800
Run time: 1H30

Mode: Flash 1

Lumens: 0-1800
Run time: 4H

Mode: Flash 2

Lumens: 1800
Run time: 4H30

SF 900 Output: 

Mode: Low

Lumens: 250
Run time: 7H

Mode: Mid

Lumens: 450
Run time: 3H30

Mode: High

Lumens: 900
Run time: 2H

Mode: Flash 1

Lumens: 0-9
Run time: 4H

Mode: Flash 2

Lumens: 900
Run time: 4H