Just thought I post up here what I've been trying out on my Hero3 Blk, Got a Transcend 128GB microSD Class10 UHS-I 600X card and a Sabrent Extended Battery. Both of Amazon and there working fine, done a couple of tests at 1080x60 and the camera reported over 8 hours of recording time didn't actually check the length of the footage, But started recording overnight and it ran from midnight right through to daylight which is about 8 hours at this time of year.
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