Not only are these excellent light gathering binoculars but they house a plethora of useful features enabled by a digital readout projected on the lenses in Terminator style red electric readouts. These include digital stopwatch, altimeter, digital compass, digital barometer – with recording function, thermometer and a tilt function to work out the height of an object. They are fully waterproof, anti-fogging and with grippy rubberised armouring. Around £420, 30 year warranty. Minox.com