Features:1. Ergonomic design,comfortable to wear.2. IPX5 waterproof design, suitable for sport running.The stereo sound let you enjoy the music world.3. Compatible with most smart bluetooth devices,including all Android and IOS smartphones.4. With built in microphone,it is very convenient for you to accept phone calls handfreely when youre busy with something else.Specifications:General Specification Model TZ16 Color Grey, Red, Green Wearing Type In-ear Net Weight (g) 20gTechnical Parameters Microphone Yes Wired Control Support Bluetooth Version V4.1 Transmission Distance 10m Receive Sensitivity 123dB Impedance 18Ω Frequency Response 20-20kHz Battery Capacity 150mAh, 3.7V Charging Time (h) 2h Taking Time 10h Working Time (h) 12h Standby Time (h) 360hPackage Included: 1* Portable Noise Cancelling IPX5 Waterproof Wireless Bluetooth Earphone 1* USB 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.