Prologic C-Series Bivvy Light 150 Lumen

When an alarm goes off, the light switches on and stays on for either five, 10 or 20 seconds, depending on how you set it up. It alerts you to which alarm went off by matching the colour of the triggered alarm. It is USB-chargeable so you don’t need to worry about batteries and has four different levels of brightness – it can also be switched on manually if required. A foldable metal hook or four internal magnets and metal disc can help you hang it just about anywhere in any kind of bivvy.