Durable Earphones with Extended Bass Response With their enhanced and extended bass response, Etymotic Research ER2XR Extended Response Earphones deliver a surprisingly powerful listening experience. These single-driver earphones offer a wide frequency response, plus over 35dB of external noise isolation. If you're upgrading from the factory earbuds included with your phone, the difference is like night and day. And you'll be able to customize ER2XR Extended Response Earphones for maximum comfort with the included assortment of ear tips. Complete with a detachable cable, and a durable anodized metal finish, Sweetwater can highly recommend the Etymotic Research Extended Response Earphones.Etymotic Research Extended Response Earphones Features: Single-driver earphones with detachable 4' cable Enhanced and extended bass response for a powerful listening experience Over 35dB of external noise isolation Durable metal construction with anodized finish Assorted ear tips include foam and 3-flange tips Included shirt clip to keep the cable out of your Sweetwater is an Authorized Etymotic Research Dealer Genuine New Item Sweetwater's 2-year warranty Etymotic Research ER2XR Extended Response Earphones Single-driver In-ear Monitors, with Enhanced Bass Response, Detachable 4' Cable, Shirt Clip, Assorted Ear Tips, and Accessories Durable Earphones with Extended Bass Response With their enhanced and extended bass response, Etymotic Research ER2XR Extended Response Earphones deliver a surprisingly powerful listening experience. These single-driver earphones offer a wide frequency response, plus over 35dB of external noise isolation. If you're upgrading from the factory earbuds included with your phone, the difference is like night and day. And you'll be able to customize ER2XR Extended Response Earphones for maximum comfort with the included assortment of ear tips. Complete with a detachable cable, and a durable anodized metal finish, Sweetwater can highly recommend the Etymotic Research Extended Response Earphones.Etymotic Research Extended Response Earphones Features: Single-driver earphones with detachable 4' cable Enhanced and extended bass response for a powerful listening experience Over 35dB of external noise isolation Durable metal construction with anodized finish Assorted ear tips include foam and 3-flange tips Included shirt clip to keep the cable out of your way SpecificationDetail Type Wired Connectivity 1/8" plug Fit Style in-ear Drivers Single Noise Attenuation Up to 42 dB, Passive Noise Isolating Impedance 15 ohms Frequency Range 20Hz-16khz Sensitivity 96dB SPL @ 1mW Max SPL 120dB SPL Detachable Cable Yes Cable Length 48" Color Black, Blue Case/Bag Soft Case RETURN INFORMATION Returns Not Accepted Fast, FREE Shipping! Nearly every order received by 3PM Eastern ships the SAME DAY! FREE shipping to lower 48 states. Our central location reaches most states in 1-4 business days 99.95% warehouse accuracy We are proud to provide some of the fastest turnaround times on eBay. We use FedEx or UPS for most items, and USPS for smaller items. Residents of Hawaii, Alaska, and Puerto Rico should contact us for a shipping quote. PLEASE NOTE: We cannot ship large items to PO boxes, please provide an alternate address. If you have questions, feel free to contact us. Buy with confidence! Sweetwater's been selling on eBay since 2001, with 99.9% positive feedback! More than 30 years in business World-class customer service Fast, FREE shipping Free 2-year warranty on nearly every product Free tech support from audio experts