FEIDOL Bluetooth Headphones, NFC Wireless Sports Earphones IPX7 Waterproof with Mic Silicone Earbuds for Running Workout Gym (HDC-XB1N)

I connected the headphones to an older Android phone that I only use as an MP3 player while I use my elliptical. This phone does not have NFC, so I did not test that way of connecting. The headphone did connect easily using Bluetooth. The sound quality is good, loud with good bass. I can use the controls on the right side earpiece to pause, control volume or to advance the music to the next song or back to the previous song.It did not come with instructions, but anyone who has connected Bluetooth knows to hold the power button down until the power light changes from blue to alternating blue/red.The listing did say "When charge the earphones, please distinguish the anode and the cathode" which means positive and negative side of the charger. The tiny (-) indicates the negative side. I took a silver Sharpie and drew a silver line on the side that attaches to the positive side of the charging connection so I could easily determine how to correctly connect the charger with the correct polarity without wearing reading glasses.The phone I am using as a MP3 player doesn't have a SIM card so I have not tested the microphone.It has true stereo sound, I am getting different sounds in each ear on songs that are recorded where a difference between right and left can be distinguished.This is my first day of ownership. So far, I am pleased with the quality, especially for the price. I have not tested how long the battery lasts, but will update the review after testing battery duration. I always keep BT headsets on a charger when not in use.After testing how long the battery lasts, I would certainly consider buying another pair or two at this price.

A headset that does a little of everything good but not great.Pros;Solid price for what you get.Actual 9+ hour battery life.25 feet with line of sight and 12 feet with walls or things in the way.Light weight on the ears.Good waterproofing, it seems more closed than other headsets, maybe because of the pin charger?Cons;Below average volume if you get into a noisy area the volume won't be enough.Larger than most headsets they're very visible.Proprietary dual pin charging cable makes me hope I never lose.Strange charging pins are sharp makes it hard to insert properly.If the charging pins are put in backwards it won't charge and that's too easy to make that mistake.Neutral;The earbuds don't go all the way in the ear so it makes them comfortable but then the soundproofing isnt good.2 hour to fully charge which seems to be average for bluetooth headsets.The mic works good enough but it also picks up everything in the area.There are two short needles that insert into the bottom of one of the headset this is how you charge it, this seems to allow it to be built as one unit improving some aspects but making it strange to use.

Sounds good but the power last about an hour