inputs.text: overall good issues - chose tripmate 850 one dataloggers lcd screen display time useful use device geotagging photos essential datalogger time camera time synchronized unit acquired satellite lock set timezone device set time camera match way ensure merge gps track data camera images never differ 1 second pros 1 lcd screen display timegps coordinatesspeed directionetc 2 tons storage recording tracks way comparable products 3 bluetooth capable though ive hardly used 4 good sensitivity surprisingly well manhattan cons 1 somewhat nonstandard track format another reviewer pointed track data files include data not valid nmea sentences specifically every track file starts ends line \\\\ 78 \\\\ sure trivial remove annoying causes software not parse track file said geosetter powerful free geotagging program use no problem reading nma track files 2 annoying issues mac plug device mac read nmea tracks fine cant properly eject device finder ejecting device often not work crash finder mount immediately ejecting youre force yank usb cable device ejects first time hopefully doesnt corrupt data device knows reported manufacturer never got confirmation whether planned fix perhaps fixed later releases device 3 battery life ok unit uses 2 \\aaa\\ batteries gets roughly 7 hours operation wish design used \\aa\\ batteries instead higher capacity id like able go full day shooting without worry changing batteries solution use energizer rechargeable batteries keep spare 4 nonrechargeable batteries seriously would hard allow unit recharge usb connector instead im forced carry around aaa battery recharger 5 poor quality unit developed problem microsd card stores track data kept popping microsd slot happened unit would cease logging obviously unfortunately since would not notice happened time event lost bunch datapoints problem made unit effectively useless would buy yes despite problem 5 could not find another unit market comparable similarly priced decided try luck