wireless bluetooth 5.0 tws in-ear headphones ipx5 waterproof mini 3d stereo sports headphone charging case

dear buyer, when buying headphones, read these instructions: long-term shipping can drain the battery. once you receive the package, you will not be able to use it. please charge for 30 minutes. very important, thank you feature: battery capacity (charging case): 2600 mah rechargeable battery battery capacity (headphone): rechargeable 50 mah battery wireless version: bluetooth v5.0 standby time: about 120 hours working time: about 4-5 hours charging time: about 1 hour