Bluetooth 5.1 Wireless Earbuds with Charging Case 40H Playtime in-ear Mic Sport

MIATONE AUSTIN bluetooth earbuds' 12mm large size speaker driver (the driver area is 1.77 times than the normal driver area) delivers powerful bass( lowest 16Hz), mellow midrange, and clear treble(up to 20kHz) [BLUETOOTH 5.1] Features with the advanced Bluetooth 5.1 technology, wireless earbuds support HSP HFP A2DP, AVCTP, AVRCP, SMP, GATT, SDP, which provides instant pairing/stable transmission without interruptions. [One Step Pairing] Simply take these bluetooth earphones out from charging case, they will automatically power on and enter into pairing mode. [Charge 10 mins, Play 3 Hours] When these bluetooth headphones are run out of juice, you put them back into the charging case 10 mins, they will play music for 3 hours. Playtime lasts for over 9 hours from single charge and total 40 hours with charging case. It takes 1.5 hours to fully charge the rechargerable case via fast charge USB-C cable included Earbuds and charging case are coated with advanced rubber oil soft/smooth.