The Bluetooth version of this product is 5.0 and is compatible with A2DP/AVRCP/HFP/HSP/SPP protocols. Its rechargeable battery provides up to 6-8 hours of listening to music and 100 hours of standby time, and its box battery capacity is 300mAh, enabling up to two full charges. This earphone has an effective distance of 10 meters when in TWS-True Wireless mode, and can be charged in around one hour. Additionally, it is IPX4-rated, meaning it is splashproof, and can easily switch between master and slave modes.