SPECIFICATION --Bin-ear separated design, can be used with a single earphone --CPU frequency: 96MHZ --Working voltage: DC 2.2V-5.5V --Signal to noise ratio: ≥92dB --Effective distance: 10M barrier-free --Frequency response range: 20HZ-20KHZ --Sensitivity: 98dB --Impedance: 32Ω --Transmission power: Class 2 --Headphone battery capacity: 50 mAh --Charging battery capacity: 500mA --Charging input: 5V / 1A --Charging time: about 1 hour --Hours of use: 4-7 hours of talk, 3-4 hours of music playback --Standby time: 10-15 days --Body weight: about 3.5 grams One to two connections, can be connected to two mobile phones, Support for binaural calls. Fitted with ergonomic design to protect the ears, no pain, no loss. Compatible phone: compatible with Andrews, Apple, Microsoft, Saipan system with 99% of the Bluetooth mobile phone Package Included 2* earphone 1*charging case 1*charging cable 1*user manual Why choose us: Here you will get the best products,gracious services and quick shipping. About Logistics 1. Orders from the UK, Spain, France, Germany, Italy, we promise to deliver within 10 days (including distribution and purchase time) 2. Orders from Netherlands, Sweden, Belgium, Denmark, USA, Australia, and delivery within 15 days (including distribution and purchase time) About Warranty All items be damaged during transportation , full refund . All orders not delivered to you , full refund . All items carry a 1 year manufacturer warranty,please set your mind at rest to purchase. If you have any other concern or are not satisfied in any regard ,please have no hesitation to contact us firstly,we will try our best to slove your problem. About Support No matter what you meet, feel free to contact us firstly,we will do our best to solve your questions, there is a professional technical team to guide you to solve the problem. About BRAND VITOG Welcome to our store, Our company focuses on wholesale, retail and dropshipping. Customers who are interested in cooperation can contact me, I will give you a preferential price and excellent service. About Feedback The clients' satisfaction and positive feedback is very important to us. Please kindly leave positive feedback and 5 stars if you are satisfied with the goods and services. If you have any problems with our items or services, please feel free to contact us firstly before you send negative feedback. We will do our best to solve any problems and provide you with the best customer experiences.Please believe that we can give you a satisfactory result, thank you.