Cellet Boom Mic Headset- Hands-Free- Slim- Gold Plated 2.5mm Pin- Universal Compatibility - Retail Packaging - Silver GOLD plated 2.5mm pin FLEXIBLE boom microphone is easily positioned as desired CLEAR SOUND: patent protected technology provides high quality audio even under windy outdoor conditions and traffic noise UNIVERSAL COMPATIBILITY - works with all 2.5mm jack phones and electronic devices HASSLE FREE WARRANTY - guarantees your satisfaction with a 3 year worry free manufacturers limited warranty. Buy it now!