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Make sure this fits by entering your model number. 500 HRS Standby Time & 38 HRS Play Time With in-built 300mAh battery, TECNO B1 Bluetooth Headphones with Microphone has great battery life with 500 hrs standby time and 38 hrs playtime. Boost Charging Technology enable fully charged in less than 2 hours. Sports headphones bluetooth let you enjoy wonderful music when traveling and doing sports. Amazing Sound Quality Stereo 13.6 MM Customized dynamic drivers ensure bluetooth wireless headphones amazing sound quality for extraordinary clarity and detail. Environment noise reduction design allows you surfing music or making phone call without any disturb. Bluetooth 5.0 Technology TECNO B1 Wireless earbuds Headphone adopt the latest Bluetooth 5.0 technology,which delivers high-fidelity audio for a more stable connection and stronger signal transmission. Compatible with both iOS and Android devices, tablets, laptops, TV,etc. Comfort and Secure Fit Design TECNO B1 Bluetooth Headphones