Product details:
"Plantronics Back Beat PRO 2 Special Edition - Wireless Noise Canceling Headphones Brand: plantronics Item model number: 207120-21 Color: Grey Product Information - Active Noise Cancelling Headphones (ANC):Switch on active noise canceling (Anc) to minimize ambient noise while working or traveling - 24-Hour Streaming: Enjoy up to 24 hours of wireless music, movies and calls before choosing the cabled connection or recharging. - Wireless Freedom: Stream rich, lifelike audio up to 100 meters/330 feet away from your Class 1 Bluetooth smartphone or tablet - Rigid Travel Case: Ear cups swivel flat to slip into the protective travel case ; Frequency response: 20 20,000 Hz Plantronics Back Beat PRO 2 Special Edition
