smartphone headphone custom,free samples can be provided,most durable headphone for smartphone

    We, Ko-Star, are committed to designing and producing high quality and stylish headphones.   By more than 10 years manufactoring experience, we have organized a professional designer/engineer team for the whole production line, as well as effective and successful QC system.   Music is Sans Frontieres.            Drive Unit: 40mm Frequency range: 20-20kHz Sensitivity: 110 dB Impedance: 32 Ohms S.P.L(at 1KHz) Maximum power input: 100mW Plug: 3.5mm stereo Cable length:Approx.1.8m Color, volume control & Mic optional       Best Driver Units match the ear cap cavity perfectly, provides superior sound effect; Elasticity and toughness superfine surface stainless steel, provides optimal pressure; Leather head arch sheath, elegant and noble quality; Elaborate finishing of each part, gold-plating metal ornament, combines the elements of modern classic, highlight the luxury; Super soft leather ear pads, provide most comfortable feeling.         More choice for ear caps    

Model NO.	Package	Master Carton				QTY/Container
	Size(cm)	Qty (pcs)	Size(cm)			20"	40"	40"HQ
			L	W	H
KH-681B	22*19*8.5	24pcs	53	46	40	6648pcs	14016pcs	15744pcs

      More choice for headband and colors     With 12 people professional QC & QA Team; Strict in-house QC processing; Triple production test before production or delivery; Material inspection and environment friendly test; Procedures/testing:IQC → IPQC → QA → OQC → QS;    CE/RoHS/FCC/EN50332 & More   More About Us.