The GPS LS was created to provide for novice or experienced pilots a flight experience with a light and simple instrument, yet with lots of features. It has almost everything that the most expensive instruments have but for a much more affordable price.

Buzzer/near thermal sound.
Ultra sensitive Variometer with 10 readings per second and 10 cm resolution.
Configurable vario digital filter and integration values.
Fully configurable Vario Sound (frequency, increments, frequency/vertical speed relation, ...).
4 Sound Levels (configurable by menu, or using a key).
Automatic mute,keeps vario silent until takeoff
Altitude adjustment using QNH
Automatic altitude adjustment from GPS
2 independent altimeters

Cross Country features

Exclusive Thermal Ball indicator
Several specific data fields like Distance to take off,current glide ratio,current speed,etc
Distance to last thermal indexed with altitude
Wind speed and direction (GPS based calculation)

3D flight logger IGC format
Storage for around 150000 trackpoints

Fixed Data Fields:

Battery
GPS Status
Max Climb Rate
Glide Ratio
Analog Vario
Integrated Vario
Ground Speed
Max. Sink Rate
Wind Speed
Wind Direction
Distance to takeoff
Course
Last thermal location.
Distance to thermal
3 independent altimeters.
Clock Flight Time
Sound Level

https://www.para-zone.de/en/
flymaster-gps-ls-892