NU25 UL - Max Output 400 Lumens - Max Beam Distance 64m - Max Beam Intensity 1029cd - Max Runtime 45 h 0 m / 1.87 d - Battery Built-in 650mAh Li-ion Battery - Special Modes Location Beacon, SOS - Beam color White Light, Red Light - Dimensions 60.1mm x 33mm x 25.5mm (2.37" x 1.3" x 1") - Weight 45 g / 1.59 oz - Feature Rechargeable, Triple Output - Activity Outdoor/Camping, Trail Running