The Stix Sport Combo package contains a bright 95-lumen headlight & 18-lumen tail light. Both feature the versatility of six light modes ranging from steady & strong to flashing & brilliant. They also feature wide-angle beams that can be seen from multiple directions plus the convenience of USB (Universal Serial Bus) charging. To increase your safety & to turn your bike into a performer for day or night-time riding this combo pack delivers> Headlight: 35 to 95 Lumens output.> Headlight: 1.35 hours to 13.5 hours runtime.> Tail light: 7 to 18 Lumens output.> Tail light: 2.5 hours to 23 hours runtime.> Charge in the USB (Universal Serial Bus) port of any laptop or phone charger in two hours (no extra cables needed).> Flexible mounting system works with handlebar & seatposts from 22.2mm up to 35mm in diameter as well as most seatstays. (Aero strap mount available separately)> Six modes including: Steady High 70 Lumens (White) 16 Lumens (Red) Steady Low 35 Lumens (White) 7 Lumens (Red) Power Surge 70 Lumens (White) 16 Lumens (Red) Power Flash 95 Lumens (White) 18 Lumens (Red) Disco Flash 35 Lumens (White) 7 Lumens (Red) Eco Flash 35 Lumens (White) 7 Lumens (Red)> Red/ Green battery charge level indicator.> Additional mounting options available separately.