Betron YSM1000 Earphones in Ear Headphones Wired 3.5mm Jack Tangle-Free Cable Case and Noise Isolating Earbuds. Manufacturer : Betron. Item model number : YSM1000. Betron Earphones feature 20hz to 20000 hz frequency response, Y Shape Cord, 3.5 mm gold plated headphone jack, lightweight earbud housing, bass driven sound, tangle-free wire.
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