FEATURES - Headlight: 120 Lumens* - Tail Light: 50 Lumens* - Most Popular Combo Kit - USB Rechargeable - Auto Safe Mode Extends Runtime an Additional 45mins TBT-120F - Modes: High, Medium, Low, Daytime Flash, High Flash, & Low Flash - Runtime: Up to 23 hrs (Depending on Setting) TBT-50R - Modes: High, Medium, Low, Daytime Flash, High Flash Slow, High Flash Fast & Low Flash - Runtime: Up to 19.5 hrs (Depending on Setting)