Description: Universal, on-ear headphones with a built-in microphone, designed for users who need a device for online communication, listening to music, and remote learning. Their classic design and lightweight construction ensure comfort even during extended use. Technical data: Communication: Wireless Color: black Manufacturer: ESPERANZA Type name: Headphones and microphones Warranty period in months: 24 Service location: Incom Group SA Cable length / Maximum range: 10.00 m Impedance (Ohm): 32.0 Gold-plated contacts: No Package contents: Maximum battery charging time: 2 hours Built-in microphone: Yes Packaging: Blister Headphone frequency response: 20Hz - 20kHz Headphone sensitivity: 105dB +/-3dB Microphone sensitivity: -41 dB +/- 2 dB Headphone/Microphone Connection: Bluetooth SCIP Database: No Cable length / Maximum range (m): 10.00