The Microvario is the ideal helmet vario for Hike & Fly, tandem pilots or as a second vario. Along with the ability to adjust the climb and sink tone threshold, it has a lifty-air tone which is particularly helpful in weaker thermals. The lifty-air tone will play when the rate of ascent is at or above the glide-ratio of the paraglider. The Microvario is a great alternative with best features at a price of CHF 120. You can download the manual here: Microvario manual.