High Quality Aluminium Metal Ear Buds Supplied in Compact Case with 3 Additional Ear Bud Sizes Included to Ensure Extra Comfort. Cord Lenth 1.1m. Spk Rated Input Powerk 1 Mw, Spk Max Input Power: 2mw. Drive Unit. 10mm, Neo Magnetic Dynamic. Frequency Response. 20hz-20khz. RoHS & CE Compliant. Minimum Quantity: 25.