[Limited Edition] Honkai: Star Rail x MOONDROP Wireless Earphone MD-TWS-040 Special Collaboration Robin Model with Voice

Bluetooth Version: 5.4 Supported Protocols: A2DP, AVRCP, HFP, HSP Charging Port: USB-C Working Distance: Up to 10 meters in an open, barrier-free environment Compatible Systems: Bluetooth devices and mobile phones Earphones Specifications Charging Time: Approximately 2 hours Battery Capacity: 3.7V / 40mAh Battery Life: Around 9 hours (using AAC codec) Charging Case Specifications Charging Time: Approximately 2.5 hours Battery Capacity: 3.7V / 470mAh Battery Life: About 30 hours (using AAC codec)