These lights are pretty great and Niterider has a lot of info about them - here it is:

The Swift™ 300 gives you more than enough lumens at our lightest weight for headlights (82 grams). NiteRider® makes this headlight USB rechargeable for convenient on-the-go charging.

The NiteRider® Sabre™ 110 is a super bright, lightweight USB rechargeable LED tail light. It utilizes a multi LED array designed for eye catching visibility in both day and night.

SWIFT™ FEATURES

• Lumen Output: 300
• 5 Modes with Run Times: 2:00 – 28:00hrs

• Charge Time: 2:00 / 3:15hrs

• Weight: 82g

• Battery: Li-Po

• Low Battery Indicator
• 300 lumen super compact

SWIFT™ RUN TIMES
Low - 15:00h at 80 Lumens
Med - 9:00h at 150 Lumens
High - 2:00h at 300 Lumens
Flash - 12:00h at 300 Lumens
Walk - 28:00h at 20 Lumens

SABRE™ FEATURES
• Lumen Output: 110
• 6 Modes with Run Times: 1:30 – 10:30hrs
• Charge Time: 1:30hrs
• Weight: 28g
• Battery: Li-Po
• Low Battery Indicator
• 110 Lumen Super Lightweight Daylight Visible taillight

SABRE™ RUN TIMES
Pulse Flash - 7:00h
Flash - 6:00h
Fast Flash - 17:00h
Steady High - 1:45h
Steady Med - 4:00h
Steady Low - 8:30h