Came-TV Waero Wireless Intercom Headset Full Duplex Digital Communication System Distance Up to 1200ft (366 Meters) with Hardcase 4 Pack Premium Noise Cancelling & Clear Audio Quality】Specially designed microphone with a close pickup pattern reduces the levels of background noise to keep comunication clear and in focus.With premium AEC performance, ensuring authentic and clear audio quality for effective teamwork. 【Universal NB-6L Battery &10hrs+ Runtime 】The runtime of the master headset can last 10 hrs, and the remote headsets can last about 13 hrs. Always keep in touch with your team for communication.CAME-Waero Wireless Intercom Headsets feature a NB-6L style battery that can be normally purchased locally 【 Up to 366m​/​1200ft LOS Reliable Range】CAME-TV Waero wireless intercom headsets are designed for any team or group that needs to stay in contact during events. With a range of up to 1200ft, you can be confident that you are always in contact with your team. These headsets are great for a wide range of activities, including sports, film production, tours, race tracks, industrial work, and more! 【150g & Premium Headphone Cushion】: The wireless intercom headset features a soft and comfortable ear cushion,Each headset only weighs 150g including battery, allowing users to comfortably wear our headsets for extended periods of time. This is particularly useful during long events or work shifts. 【 Hands-Free & Mute Function】Ready out of the box, raise the mic boom to mute easily, and put the mic boom down to talk. You can also swivel the boom mic up to 270 degrees. You can talk and listen while working at the same time.