Update#1: charging case failed after 3 days- returning for exchange 1st review: Longer battery life, can use either bud by itself- a REAL UPGRADE! Arrived charged up and ready to go- nice surprise. Paired right away Has longer battery life- will update review once I get some real-life battery use and times CAN USE either bud by itself- I listen mostly to podcasts, this is awesome! Seals out ambient noise well,( I use with weed wacker) with the supplied ear seals Has "EQ" modes easily accessed Better than other units which cost 3 times more!
****** NOTE THAT THE CHARGING CASE FAILED AFTER THREE DAYS- returning for exchange. another update The exchanged unit is working well after 4 weeks- 4 star rating, will update if these continue to provide good results..or bad!
+++++++++ Buds left in the charging case may turn on and run down the battery, then recharge...depleting the charging case in a 1/2 day- this may also cause audio problem as the BT interrupts wired headphone use Once charged, remove from case and manually turn off until needed- update...buds turned OFF and sitting on the table have turned on and attempted to pair- running down the battery- it has also happened that buds torned OFF have turned on interrupting iphone audio through wired buds- have to remember to turn iphone bluetooth off. - if using 1 bud while the other is charging, the bud on the charger may cycle on and off and that may cause your connection to drop and reconnect ( audio intermittent) with the bud in your ear OR with wired earbuds!
I think this and charge case issues may be the reason why these have limited availability at amazon or skullcandy website- watch for a version 2 ....!?
Update 5: after about 5 or 6 weeks the battery life is declining- the left seems to be about 4 hours, the right is about 2 hours use... they were closer to 5 hours when new Update 6: battery life is reduced- this could be associated with the above buds turning themselves on
the bluetooth has been quite good ---when it works--- with range of 50' not unusual
Update 7: buds, FULLY charged and manually turned off and left for 48 hours- on power up showed 1/2 strength and turned off after 2 hours These buds have great audio and bluetooth- the power/battery management in a mess. I will be returning this set ( third set)