Please Notice: Left earbud will be main headset for call talking/hearing, Right earbud will mute. Specifications: Working time :2-4 hours Standby time :80-100 hours The charging time: 1-2 hours Battery capacity : 60MAH Wireless distance : 10-12M Compatible phone: compatible with Android , IOS , Microsoft and so on , 99% of the phone with bluetooth . Bluetooth version: Bluetooth v4.2 + EDR Bluetooth use band: 2.4GHz With A2DP / AVRCP high-quality stereo audio transmission and remote control protocol Powerful noise de-noising circuit (active noise reduction) Switch between Chinese and English (boot does not connect Bluetooth state, press the switch 2 times, hear the tone switch successfully) Charging time about 1.2 hour (power indicator charging: red light, full power: red light off (blue light). What You Will Get ? 1 X A Pair of Earbuds 1 X Dual headed micro USB Charging Cable for Earbuds 1 X User Manual 1 X Charging Case 1 X Charging Cable For Case100% 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.