Durable Battery Life - you can enjoy 5 hours of continuous music time with one headphone and 2.5 hours with two; One earphone can stand by 120 hours and two for 60 hours. HIFI Wireless Stereo Sound Effect - Featuring Bluetooth and lossless rendering technology that produce incredible sound quality. These wireless headphones can block out a lot of surrounding noises, and avoid wind noise created during sports. Easy to Pairing - Our technology provide you stable and wireless connectivity with Bluetooth and enable devices up to 33 feet away, which also ensure low latency and low energy features during data transmission. High Speed Charge - You can get the battery quickly fill the battery 100% within 60 minutes. The charge box equipped with 300MAH battery, which can be charged three times in a row. Warranty Police - We will provide good after service when you purchase our headphones. Please contact us directly if you have any question, 100% satisfaction.