KOSS BT 115i Wireless in-ear headphones

KOSS BT 115i Wireless in-ear headphones deliver a premium wireless listening experience with convenience and comfort. - Bluetooth 4.1 technology for seamless wireless audio streaming - Ergonomic in-ear design with multiple ear tip sizes for a secure and comfortable fit - Built-in microphone and remote for easy call handling and music control - Up to 6 hours of continuous playback on a single charge - Compact and lightweight for portable use Compatible with all Bluetooth-enabled devices such as smartphones, tablets, and laptops. In the box: KOSS BT 115i wireless in-ear headphones, USB charging cable, set of small, medium, and large ear tips, user guide. Technical specifications: Bluetooth version 4.1, wireless range up to 10 meters, battery life up to 6 hours, charging time approximately 2 hours, frequency response 20 Hz – 20 kHz, impedance 16 Ω.