Find helpful customer reviews and review ratings for NENRENT S570 so quite small and may need magnifying glass to better read the instructions.Need help with a Nenrent S570? Is your Nenrent S570 not working? Can't pair your Nenrent S570? Bluetooth doctor can assist with our online forum. This user manual will tell you the correct use of Bluetooth headset and it is performance parameters. 1.The name of each part and comfortable wearing. Pairing via Bluetooth: The pairing via Bluetooth was simple and easy like the instruction states. Hold earbud MTB (multi-functional button) for about 5 second