Experience the freedom of sound with Bluetooth headphones UID-20 Discover a new dimension in sound experience with Bluetooth headphones UID-20. Designed for music lovers on the move, these headphones offer innovative features that will take your musical experience to new heights. Wireless connectivity 5.1: Dive into the freedom of music without restrictions with the latest Bluetooth 5.1 technology. Enjoy stable and fast wireless connection for a continuous musical experience. Playback time of 5 hours: Enjoy your favorite music for hours without interruption. With up to 5 hours of continuous playback, the headphones are ideal for extended listening sessions. Original sound quality: Experience music the way the artist intended. The original sound quality of the headphones guarantees precise reproduction and richness of nuances for an authentic musical experience. Fast charging: Do not waste time waiting. The fast charging function allows you to quickly charge your headphones so you can dive back into your favorite music without delay. Integrated voice assistant: Simplify your experience with voice commands. Access your favorite voice assistant with one touch and control your music, make calls and much more without having to take out your device. Call, song and volume control: Maintain full control with intuitive functions. Answer calls, change songs and adjust the volume directly from your headphones for an uninterrupted user experience. FM mode with volume control: Explore new entertainment options with the built-in FM mode. Adjust the volume and change the station directly from your headphones for a personalized radio experience. Listen to music from a memory card: Take with you your memory card with your favorite songs and simply insert it into your headphones. 3.5mm connector for greater versatility: Easily and quickly connect to devices via the 3.5mm stereo connector, giving you the flexibility to enjoy your music even when the battery runs out. Discover comfort and premium sound quality with Bluetooth M9i headphones, the perfect choice for those who seek a musical experience without limitations and compromises.