EJEAS FBIM Professional Football Referee Bluetooth Intercom Headset Communication System, 4.5KM 4 Person Online Intercom, 850mAh Battery, with Armbag EJEAS FBIM Professional Football Referee Bluetooth Intercom Headset Communication System, 4.5KM 4 Person Online Intercom, Bluetooth 5.1, with Armbag EJEAS is a well-known professional intercom export brand in China, which has specialized in Bluetooth intercoms for nearly 20 years, and it mainly focuses on the research and development in motorcycle and referee intercom areas. It strives to do better in product upgrading, and provide its customers with more favorable experience. And this is the official store for EJEAS, please feel free for purchasing. [Light and Portable] It is small and portable, easy to install and carry, and the headset design makes it more stable and safe to wear. The intercom can be put into the handbag. No need to worry about falling when moving fast. EJEAS FBIM Professional Football Referee Bluetooth Intercom Headset Communication System, 4.5KM 4 Person Online Intercom, Bluetooth 5.1, with Armbag [Super Large Capacity Rechargeable Battery] 2.5-hour charging time provides up to 260-hour standby time, 19-hour communication time, it's enough to meet the continuous demand of a game. [Bluetooth 5.1 Chip] Newly upgraded Bluetooth 5.1 chip can reach an ultra long distance to 1500 meters for 4-person online intercom. [CVC Noise Reduction] CVC noise reduction technology offers a clear and stable sound quality, reduces echo and noise and provides better experience for judges. [Wide Application Scenarios] Widely used in various game scenarios, outdoor sports and daily training, such as football, basketball, golf, summit, rugby, etc. EJEAS FBIM Professional Football Referee Bluetooth Intercom Headset Communication System, 4.5KM 4 Person Online Intercom, Bluetooth 5.1, with Armbag FBIM V4C V6C F6 Add to Cart Add to Cart Add to Cart Buying Options Customer Reviews 5.0 out of 5 stars 3 4.8 out of 5 stars 6 4.0 out of 5 stars 131 1.0 out of 5 stars 4 Price $149.99$149.99 $134.99$134.99 $85.99$85.99 — no data Multi-intercom Connection 4 4 6 6 Real-time Group Talk 4 4 2 6 Intercom Distance 1500M-4000M 1200M-6000M 1200M-6000M 800M-400M FM no data no data ✓ no data Battery Capacity 850mAH 750mAH 850mAH 1200mAH Intercom Technology Bluetooth 5.1 Bluetooth 5.1 Bluetooth 5.1 MESH Information Encryption no data no data no data ✓