I have recently become the UK supplier for the XC Tracer and XC Tracer Mini lag-free varios.

Both varios share the same barometer and 9 DOF (degrees of freedom) sensor, however the XC Tracer has a GPS chip and Bluetooth LE to allow it to connect to smartphones and Kobos, whilst the XC Tracer Mini is just the vario and is solar powered.

Here are two videos demonstrating the lag-free nature of the varios:
Please visit my Facebook page here, or xctraceruk.com, for more info and to order.
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