Features:1.FD600I provides large battery life which meet your needs of music.2. It supports the real-time power display of IOS devices and some android models.3. One FD600I can connect 2 mobile phones simultaneously.4. Using 12mm moving coil drive speaker unit brings a high quality sound.5. Supports Chinese, English and Korean languages, Bluetooth headsets are more intelligent.Specifications:General Specification Model FD600I Color Black Gold, Black Silver, White Gold, White Silver Wearing Type Neckband Material Alloy Net Weight (g) 22gTechnical Parameters Microphone Yes Wired Control Not support Bluetooth Version 4.1 Transmission Distance 10m Receive Sensitivity 88dB Impedance 16Ω Frequency Response 20‐20KHz Battery Capacity 130mAh, 3.7V Charging Time (h) ≥2h Taking Time 10h Working Time (h) 7h Standby Time (h) 240hPackage Included: 1*FD600I Wireless Bluetooth Speaker 1*Charging Cable 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.