Bluedio Model R Revolution 8 Tracks Built in Mp3 Player Hi-Fi Rank Wireless & Bluetooth Headphones (White)

POWERFUL SOUND AT AN AFFORDABLE PRICE!!

Supports Line-In: 3.5mm jack included, just plug in 3.5mm audio cable, can be connect with mobile or computer, listening to music.
Extremely Portable Flexible Headband: With a foldable headband, you can fold it into a smaller size, more convenient for carrying.
Ultra-Strong: Up to 20 hours talk time and up to 325 hours ultra long strong standby time.
After a simple pairing, use the Bluedio R Wireless Bluetooth Headphones to:
Listen to your favorite music COMPLETELY WIRELESS!
Answer your Cell Phone through the wireless headphones!
Drown out loud and annoying background noises with its reliable noise-cancelling technology!
Transfer movies, music data or other files USB Files with the built-in Micro SD Card Slot!

Operating Distance | 30-65 feet
Sensitivity | 110dB
Frequency Range | 15-22 kHz
Frequency Response | 20-22 kHz
Music Play Time | Up to 20 hours
Charging Time | 3-4.5 hours
Weight | 10 oz
Warranty | 1 year limited manufacturer warranty