Good Tacho + Altimeter + Heart Rate Monitor. The price of the anniversary edition a bargain. The only drawback is - as with many other speedos also - that the speedometer operates continuously and automatically powered off. Experience has shown that means 1 x annual battery change. Unfortunately, the product from Amazon is 2 x supplied with empty batteries. When 1st time was made by me of the return shipment, the 2nd time was made by Amazon a payment that compensated for the battery change made by me.
