A really useful communication tool for those who spend many hours outside and travel often. The wireless headset up to 10 meters, with a large and easy-to-use answer key and Bluetooth V5.0 version that significantly reduces interruptions and ensures sound quality. Supports playback of music, videos and calls on iOS and Android, with clear and continuous sound with a more stable signal. The big advantage of the E57 is its battery since with one charge it can deliver up to 10 hours of talk and playback but also 200 hours in standby mode since it has a powerful 170mAh battery!