Exposure Flash & Flare Light Set with RCR123 Charger Exposure Flash Front Lights ensure that you get seen day or night. With 110 lumens output, theyre bright enough to allow you to see your way home when you get caught out later than you had planned while being small enough to hide in your pocket. The Exposure Flash Front Light is fully sealed & simple to use, just rotate the head to turn on or off & can take either disposable or rechargeable batteries as well as being fully rechargeable. Mains charger included. Exposure Flare Rear Lights give 75 lumens output. Theyre incredibly bright for a rear light, yet brilliantly compact, with the power of the Exposure Red Eye but in a cable free unit. The Flare can run on disposable or rechargeable batteries, is remarkably simple to use, simply rotate the head to turn it on & off. Exposure RCR123A Charger Packs consist of a mains charger & two re-chargeable Li-ion batteries, either one or two batteries can be charged at any time. This charger pack is used for the Spark, Flash & Flare Exposure Lights. The charge time is a mere 2.5 hours.