I-210PR OLLEY COMBO - Size: [Front] 49×28×22mm / [Rear] 50.6×28×20mm. - Led: [Font] 1 × 3 Watt White LED / [Rear] 38 chips COB LED. - Brightness: [Front] 100 Lumens / [Rear] 20 Lumens. - Battery: Rechargeable Lithium-ion Polymer battery. - Run time: [Front] 4 hrs (Low) / 1hrs (High) / 20 hrs (Flashing) / 8hrs (Daytime Flashing) / [Rear] 4.5 hrs (Low) / 1.5 hrs (High) / 20 hrs (Flashing 1) / 5 hrs (Flashing 2) / 7.5 hrs (Flashing 3) / 15 hrs (Flashing 4) / 8 hrs (Daytime Flashing). - Charge: 2 hrs (DC/5V, 0.5A). - Bracket: [Front] FB05, fit Ø19-Ø32mm / [Rear] RB05, fit Ø19-Ø32mm. - Weight: [Front] 18g / [Rear] 18g.