With the Stix Switch 2-Pack your lighting options are endless. How? The Stix Switch features the ability to switch between red and white modes with a simple long press of the power button. So if you need extra light up front more visibility at the rear or a traditional front/rear combo the Stix Switch 2-Pack delivers. Headlight or taillight—you decide. Press-and-hold for two seconds to shift between white and red modes. Three white modes including: Steady 65 lumens Power Flash 100 lumens Eco Flash 35 lumens. Five red modes including: Steady 18 lumens Surge Glow 16 lumens Power Flash 30 lumens Disco Flash 15 lumens Eco Flash 8 lumens 2- to 20-hour runtime. Fresnel lens for maximum visibility in all directions. Charges in the USB port of any laptop or phone charger in two hours no extra cables needed. Flexible mounting system works with handlebar and seatposts from 22.2mm up to 35mm in diameter as well as most seatstays. Aero strap mount available separately. Red/Green battery charge level indicator. Additional mounting options available separately.