Your ears have never looked better: Earbuds take your passion for music to new heights, with loud sound that makes you feel like you're on stage with your favorite band. Note: If the size of the ear tip tips does not match If your ear canal size or the earphones fit incorrectly, you may not get the correct sound quality or call performance. Replace the ear tips with ones that fit your ears better. R177: Bluetooth headset connects automatically when the cover is opened, the headset is 45 mA, and you can listen to music for more than 4 hours. The charging box is 300 mAh and can be charged 3-4 times. The charging time outside the charging compartment is 1.5-2H. Product functions: binaural listening to music, binaural calls, wireless charging, Hall switch, touch. Single product weight: 53.9, complete machine weight: 141.g. Accessories: manual + data cable + ear caps.