Front: Max 600 lumens 36 hour max runtime CNC machined aluminum with cooling fins Infinite Light Power Pack+ compatible Rigorously tested to IPX7 waterproofing standards 1900 mAh battery capacity USB-C Rechargeable (cable not included)Rear: Max 150 lumens Max 24-hour runtime 6 lighting modes including the highly disruptive Daytime Flash Wide Angle Optics for up to 270° of visibility Slim, simple and secure O-ring mounting system on aero and round seatposts Unique aero and round seatpost compatible design Rigorously tested to IPX7 Waterproofing standards 400 mAh battery capacity, replaceable Water-resistant USB-C charging (cable not included)