Importer520 Black/Black 3.5mm In-Ear Stereo Headset w/On-off & Mic for Nokia Lumia 521(T-Mobile) Brand New Non-OEM (Generic) Polybag Package Enjoy Hands-free conversations with this in ear stereo headset w/ On Off switch. Compatible With iPhone 1st Gen. 16GB/4GB/8GB,iPhone 3G 16GB/8GB,iPhone 3GS 16GB/32GB,iPod 1st Gen. 10GB/5GB,iPod 2nd Gen. 20GB,iPod 3rd Gen. 10GB/15GB/20GB/30GB/40GB,iPod 4th Gen. 20GB (Color Display) / 30GB (Photo) / 40GB (Photo) / 60GB (Photo) / 60GB (Color Display) / U2 Special Edition/iPod Shuffle 1st Gen.512Mb,2nd Gen.1/2GB,4th Gen.2GB Includes integrated earpieces and microphone. Compatible With: HTC EVO 3D/HD7S;T-mobile G2x/LG G2x/P920 Optimus 3D/Thrill 4G;Sony Ericsson Xperia Play;Barnes&Noble Nook/Nook Color; LG Connect 4G MS840, Samsung? Brightside U380,Samsung? Rugby Smart i847,Samsung? Galaxy S2 CDMA (U.S.Cellular) R760 Cord mounted ON/OFF button which lets you take calls and hang up easily. Compatible With Samsung? GT-i8700 Omnia 7 / Samsung? Infuse 4G / Apple U2 Special Edition.Samsung? Galaxy Prevail SPH-M820 / Galaxy S GT-i9100./ LG Optimus 2 AS680 / LG Nitro HD P930 / Samsung? Repp R680 / Illusion / HTC Holiday / Vivid / Raider 4G / Nokia Lumia 710;Motorola Droid Razr Maxx, LG Spectrum/Revolution 2, Samsung? Galaxy Attain 4G R920, Samsung? Galaxy Note LTE SGH-I717, Motorola Droid 4. Excellent sound quality and super clear sound. Keep your hands free and on the wheel. Compatible With iPod 4th Gen. 20GB (Color Display)/30GB (Color Display)/40GB (Photo)/60GB (Color Display);LG LS855 Marquee/ LG LS700 Optimus Slider/ Samsung? SGH-i927 Captivate Glide/ Samsung? SCH-i405 Stratosphere/ HTC Amaze 4G/ HTC EVO Design 4G;HTC Rezound/Vigor, HTC Radar 4G, Samsung? Focus S/Focus Flash, LG Maxx Qwerty/Maxx Touch,T-mobile myTouch Q,T-mobile myTouch,HTC Titan.