Multi Language Business Travel Smart Headset Black Description: Smart headset: support 144 real-time languages. Suitable for business, study, travel, etc. Noise Reduction: Built-in high-sensitivity microphone, noise reduction technology, stereo Hifi, allowing you to enjoy high-quality translations, calls and real-time music, even in noisy environments. LED display: LED digital display, real-time understanding of the remaining power of the charging case and left right headset. Wireless V5.1: The V5.1 wireless headset provides a more stable connection, lower latency, faster pairing and universal compatibility, 10 meters connection. Long Standby Time: 400MAH charging case, 80MAH earphone, long standby time is 80 hours, play and talk time is about 7 hours. Temple, comfortable to wear, not burdening the ear canal. Specification: Product size: 6.3cm x 6.3cm x 3.1cm / 2.48" x 2.48" x 1.22" Material: Transmission distance: 10 meters Battery Capacity: 80mAh/400mAh Charging voltage/current: 5V/1A Play/talk time: about 7 hours Charging time: about 3 hours Standby time: more than 80 hours Speaker Impedance: φ16mm 32Ω Microphone sensitivity: -42Db Online languages: 144 languages The package includes: 2 headsets 1 charging case 1 charging cable 1 manual Note: