Compatible with Samsung GT-i9100 Galaxy S 2 Extreme-Performance Mobile Stereo Earphones with Microphone (Black) Enjoy Hands-free conversations with this in ear stereo headset w/ On Off switch. Includes integrated earpieces and microphone.HTC EVO 3D/HD7S;T-mobile G2x/LG G2x/P920 Optimus 3D/Thrill 4G;Sony Ericsson Xperia Play;Barnes&Noble Nook/Nook Color. Cord mounted ON/OFF button which lets you take calls and hang up easily. Compatible With Samsung GT-i8700 Omnia 7 / Samsung Infuse 4G. Excellent sound quality and super clear sound. Keep your hands free and on the wheel. BlackBerry: Bold 9000/9700/Onyx,Curve 8300/8310/8320/8330/8900,Pearl 8110/8120/8130,Pearl Flip 8220,Storm 9500 Thunder,Storm2 9520/9550/Oden;HTC EVO Shift 4G/Inspire 4G/Freestyle. Motorola Droid 2 Global / Samsung Gem SCH-I100 / Sony Ericsson Xperia Arc.HTC ThunderBolt 4G;LG Optimus 2x P990 Star;Palm Pre 3.Motorola Atrix 4G/i886/CLIQ 2;Samsung Galaxy S 4G/Motorola Flipside/Citrus WX445/LG Prime GS390/Nokia C3-01/X2-01/C6-01