Features:1. The sustainable play of about 4 hours of music on a full charge and 200 hours for a long standby.2. One headset with two mobile phones, can exchange with each other and no need to configure more earphones.3. Wearing comfort, not easy to fall off.4. Support voice reminding/dialing, no need to remove earphones.5. Enjoy an impressively power sound be free Bluetooth play.Specifications:General Specification Model J11 Color Black Wearing Type Neck hanging Material Plastic Net Weight (g) 15.5gTechnical Parameters Microphone Yes Wired Control Support Bluetooth Version 4.2 Transmission Distance 10m Receive Sensitivity 110±3dB Impedance 36Ω Frequency Response 100Hz-10KHz Battery Capacity 350mAh, 3.7V Charging Time (h) 1-2h Working Time (h) 4h Standby Time (h) About 200hPackage Included: 1*Bluetooth Earphone 1*Charging Cable 2*pairs of earbuds 1*Manual100% Hot and High QualityWe will carefully test every item before shipment.Notes:Due to manual measurements, please allow an error of 1-3 cm.Due to problems between different monitors, the image may not reflect the actual color, please refer to the actual product.If there is a problem with the product, please contact us.Thank you for understanding.FEEDBACK:1.If you are satisfied with our products and services,please leave your postive feedback and 5 stars.2.If you don't satisfied our products,pls contact us before you leave negative feedback.we guarantee we will 100% slove any problem for you and make you satisfied.SERVICE:1.We care about our valued customers,and will always try to help you,hope to establish long business with you.2.Please contact us by Jumia Customer service before leaving any negative feedback or opening and dispute on the site. Please give us the opportunity to resolve any problem.Thank you.