With a productive bluetooth headphones factory on your service,Website:http://www.rocflygreen.com, Rocfly Blue Electronic Co.,Ltd is one of the famous bluetooth headphones manufacturers and suppliers. We can offer customized and best bluetooth headphones, and we are waiting for your contact.Features：1) Support connect two equipment at the same time,support different smart phone system.2) Vibration reminding when phone call comes in.3) Receiving earplugs via Magnetic suction automatically4) Built in apt-X technology reproduces CD quality sound over a Bluetooth connection5) Neck wearing style provides all day comfortable6) High quality stereo bluetooth Wireless headset with music & phone functions.Detailed specifications:1- Charging voltage: MICRO USB 5V2- Working current: 10-20mA3- Bluetooth Working range: 10M4- Output power: 2x18mW5- Frequency range: 2.401-2.480GHz6- Distortion factor: ≤1%7- Frequency response: 20Hz-20KHz8- Working Time: Music state 10 H / Talking state 15H9- SNR: S / N≥9510- Charging Time: 2h11- Bluetooth name: HBS-90012- Speaker: 16Ω20mW x 213- Battery: 3.7V / 195MAH14- ANC frequency 100-1000HZ15- ANC level 15-20dB16- Standby time ≥500H17- working environment -10~60 degreePackage List:* Bluetooth Headphone* User Manual* Charging cable* Replacement Ear budsFAQ:Q1. How to place an order? What about the price?A1: Please place an inquiry directly or contact our online sales. We'll reply you ASAP within 24 hours during our work days and offer you a factory price.Q2. Can I have my logo printed on the products and packing box?A2: OEM is the most welcome,please give us your detailed requirements.Q3. What about your payment terms?A3: It's 30% deposit, balance before delivery, TT acceptable or other negotiable terms.Q4. What's the delivery time?A4: It should be 3-7 days according to specific requirements and the quantity.Q5. What's the quality assurance?A5. It's one year.