•  Wireless Type: Bluetooth EDR (both sides), Ultra Low Consumption
•  Bluetooth Version: V5.3
•  Bluetooth Mode: A2DP 1.3/HFP 1.6/HSP 1.2/AVRCP 1.6/D 11.3
•  Frequency: 2.4 GHz
•  Transmission Distance: About 15 – 25 m
•  Package Dimensions    ?13 x 9.5 x 3.5 cm; 150 g
•  Package Includes: 1 x Air 31 Earbuds
•  Note: Please ensure to follow the instructions provided in the user manual for proper usage and safety precautions.