Retro Phone Headset 3,5 Mm Classic Mini Na Cellular Yellow : : Noise reduction system, high-quality speakers and microphone for added call comfort Buttons: simple and touch buttons, answer and end calls, convenient and easy to use High-resolution speaker and microphone: there is a button from the microphone to adjust the volume Soft to the touch na outside: suitable for Move away from the phone to eliminate up to 99% of radiation absorption Compatible with Cellular and Computers: Compatible with most 3,5mm devices Compatible with all Cellular and Computers Specification: Model: xsl-560 Material: ABS Plug: 3,5 mm Frequency Range: 20-20000 Hz Sensitivity: 111dB3% Impedance: 150ohm Speaker Diameter: 38mm Length: about 1 meter long Connection plug: four 3,5 mm terminals adjustment: button Function: Noise reduction system for improved call comfort. sizes: 21x5x6 cm/8.27x1.97x2.36 inch contains: 1 telephone handset