MED/EC APPROVED (RINA)Luminous Intensity: ≥ 0.75cdTime of Power: ≥ 8hAdaptive environment temperature : -30℃ ~+ 65℃Flash rate: 50-70 flashes per minuteBattery: 1*3.6V, Lithium batteryBulb: White LED, 50mAValidity of Battery: 5 years