Review on Criacr Bluetooth Headphones: V4.1 Mini Invisible Wireless Earbud, 6 Hours Playing Time, Built-In Microphone & Hands-Free Call - One Pcs ONLY (Black) by Virgilio Feliciano

Manual says the battery must be fully charged before first time use, so I charged it. I then powered it on, paired it with my Phone. After several songs, I plugged in the audio cable. That turned off the BT connection as the manual described. All's well at this point. After a few songs. I unplugged the audio cable. Tried to pair it again with my phone, it won't. Pressing the Power button doesn't lead to anything - not powering off, not powering on, no pairing.Hmmnn, could it be a dead battery but it's been used less than 15 min. There was no red light or voice prompt indicating/saying that the battery is low.So, this headphone's life lasted less than 15 min.