Feature 1, the appearance of the use of lightweight sports design, hanging after wearing, unique design novel 2, portable, lightweight, sporty shape design, sports, leisure, office can be free to listen 3, support files: MP3, WMA 4, high-quality speakers and sound chamber design, to ensure high-fidelity, sound quality effect 5, the volume is continuously adjustable, play the state of free transformation Specifications 1, USB interface: high-speed USB 2.0; iPod headset can be charged and transfer files 2, memory capacity: no memory, is the card type, the maximum support 8GB, adapter TF card micro sd card 3, the charging power: computer USB port DC 5V; DC 5C (500mA) travel charger; DC 5V (500mA) car charger 4, battery: DC 3.7V; rechargeable lithium-ion polymer battery 5, continuous working hours: about 4 hours; (due to the use of different things have changed) 6, charging time: about 2-3 hours; (due to the use of different charging equipment has changed); charging time to remember not more than 3 hours 7, the frequency response: 20Hz-20KHz 8, signal to noise ratio:> 85db 9, the working environment temperature: 0 ℃ -45 ℃ Package Included 1*Headphone (Retail package is not included,We use safe express packing)PAYMENT 1. PayPal payment only. 2. Payment must be received in 7 days SHIPPING 1. We ship the items to your address provided on Ebay. 2. Item will be shipped within 1 business days after received a verified payment. 3. All the items will be checked before shipped out.Please rest assured that quality is ensured. 4. Shipped by air mail which normally takes 15-45 business days for arrival. Terms of Sale 1. If there are any problems with our products,Please feel free to contact us.You dont need to contact ebay or paypal.And please DO NOT leave us Neutralnegative feedback,It wont help the problem to be solved.And it is the worst hurst to a seller.We should try our best to make a happy and easy transaction. 2.if you are not satisfied with our products or service,please DO tell us.Refund will be given as money back or item could be exchanged. 3. If you are satisfied with our products and our service,please tell your friend and leave us 5 Stars Positive Feedback; ABOUT US1.100% Authentic. 2.Brand new (Unless the description says used), first quality, with all original parts and authentic. 1. Working Day: Monday to Saturday 2. Working Time: 9:00 am to 18:00 pm (GTM +8:00 Beijing) 3. If anything we could help you,please feel free to contact us.