Symphonized nrg_bluestripe, NRG Premium Genuine Wood in-Ear Noise-Isolating Headphones with Microphone - Blue Stripe Handcrafted with genuine wood: These earphones produce a crisp powerful acoustic sound with strong deep bass Unique in-ear canal design: These noise cancelling in-ear headphones reduce ambient noise for an exceptional audio experience Comfort-fit: Three sizes (s/m/l) of custom silicone ear tips to ensure a comfortable fit for everyone and one convenient carrying pouch included Easy to use: Answer or end calls, activate voice control, skip tracks with a smart built-in in-line microphone They work with all androids, tablets, MP3 players and related devices with a standard 3.5 mm jack