Mpow Truck Driver Bluetooth Headset/Office Headset, Wireless Over The Head Earpiece w/Mic, On-Ear Headset for Call Center, Skype, VoIP BUILT FOR CLEAR CHAT -- Superior 4X Noise Cancelling Microphone blocks out unwanted noise. The mic is also adjustable to pick up your voices loud and clear. Provide crystal-clear conversations even in noisy environment. LIGHTWEIGHT & COMFORTABLE -- The headset weights 1.48 oz (lighter than an egg). Enjoy extended comfort with padded earpad and flexible headband. 12-Hrs TALKING TIME -- Offer up to 12 hours continuous talking time and 200 hours standby time with single fully charged in just 2 hours. EASY PAIRING & WIRELESS FREEDOM -- Pair easily with any two Bluetooth devices at one time. Roam range up to 30 feet from paired Bluetooth devices. Meet all your needs of calling. PRODUCT WARRANTY -- Mpow offers 45 days money back & 18-month worry-free guarantee. Please note that this headset doesn't support listening to music.