Last year I started carring the Bryson Bicycle computers, The Bryson 100 and the 310, the reson I brought them in was that they were GPS computers that the charge would last for 30 plus hours. My Garmin would only last 9 hours so a two day ride I would have to go in search of a electrical outlet to charge up for the second day ride. No need with the Bryson, have used it for 3days in a row and it still will go longer. The 530 is a full GPS with mapping with the largest screen of any computer on the market. and the best thing is it is about half the price of the Garmin.
BRYSON 530 $179.95
BRYSON 530 with Cadence $199,95
BRYSON 530 with Cadence and HR $230.00