China Earphones Brief Introduction IP55 waterproof level, over ear model, Pogo pin charging port for 2 hours, approximately 6 hours song playing and phone talking, Bluetooth is available within the radius of 10 meters (33 feet)area, slim design and finest surface finish, friendly control. this item conform to CE/FCC/BQB, and also fulfilled the latest environmental regulation. It is an environmental friendly creation. Product Main Features & Parameters Bluetooth IC: QCC3024 Bluetooth Protocols: A2DP, HFP, HSP, AVRCP, GAVDP, AVDTP Speaker Type: Bone Conduction Technology, 1W dual speaker Receiving Sensitivity: 88dBm Impedance: 8惟(+-15%) Frequency range: 20鈥?0KHz System language: prompt in English Charging: Mic.USB port ( 2 hours ) TF card: not applicable BQB included (Y/N): Yes Mic: Anti鈥恑nterference microphones, 鈥?2DB Battery: 180 mAh power battery Playing time: 6 hours Standby time: 10 days Weight: 32 g Package includes 1 x Bone Conduction Headset 1 x Charging Cable Note: Kuipass is a trade mark which is registered in China & USA, Shenzhen Kedakang Industrial (SKI) owns the rights and it is under protection by the two above mentioned countries. FAQ 1. Q: Are you a manufacturer? A: Yes, we are manufacturing the products in our own factory base in Shenzhen China, we also accept your OEM/ODM request 2. Q: Can you do our design with our logo? A: Of course we can, our company has been running these types of business in PRC for more than 15 years. customized tooling is welcome & it may charge extra fee. 3. Q: How long is your lead time? A: Normally it will take 3 to 4 weeks including material preparation. 4. Q: What else surface treatment your factory can do? A: We can do Anodizing, Plating, Painting, CNC lathing, Polishing, etc. to customize the unique design. Our Testing Equipment (partial)China Earphones website:http://www.kedocons.com/earphones/