Bluetooth Earphones V5.0 Wireless Bluetooth Headphones,Jie Li 5.0, TF Card Slot, 40mm Speaker, 150mAh Battery, 4H Playtime,120H Standby time,3 Buttons Product Specifications Attribute Value Type On Ear Headphones BT Version 5.0 Standby time 120H Speaker Size 40mm ETEK Bluetooth Headphone This headphone supports Bluetooth Jie Li 5.0 for stable connection and fast pairing. It has a 150mAh battery offering up to 4 hours of playback and 120 hours of standby time. A 40mm driver