Excellent Sound Quality: Wireless earbuds adopte graphene drivers and a polymer composite diaphragm carrying an AAC/SBC audio decoder, resulting in up to 43% bass enhancement. Audio technology is losslessly transmitted for a clearer stereo sound from the headphones. 40Hrs Cycle Playtimes: The 400mAh charging case has a playtime of 35 hours and the wireless headphones have a single playtime of 5hours of music. Quick charge in 10 minutes, 1 hour of use. In case of emergency. Bluetooth 5.3 Technology: The wireless headphones adopt bluetooth 5.3 chip, low battery consumption, fast transmission speed, and stable connection range up to 18m. Clear Call: Bluetooth earbuds adopt 4-microphone ENC reduction technology, combined with 13mm speakers, Making call is still very clear in public or gym environments. Ship or pick up at my address .first come first served, advance payment can be reserved. I'm in Franklin South.