• The open ear headphones do not need to be inserted into the ear canal, you can keep aware of surrounding danger
• With Bluetooth 5.0 technology, the connection is faster and stable
• Support up to 8G TF card (not included) you can also play music without your mobile phone free  your hands and refuse to be encumbered
• Built-in 200mAh battery, with one charge, it can provide up to 18 hours of music time
• IPX4 waterproof design, the headphones repel sweat, dust and moisture throughout your indoor or outdoor exercise routine

Specifications:

• Material: PC + TPE
• Bluetooth Version: V5.0 + EDR
• Bluetooth Protocol: A2DP/AVRCP/HFP/HSP
• Transmission Range: ≤10M
• Loud Speaker Diameter: 6mm
• Horn Sensitivity: 98±3dB
• Speaker Impedance: 16Ω±15%
• Speaker Frequency Range: 20Hz-20KHz
• Microphone Sensitivity: -42±3dB
• Microphone Frequency Response Range: 100Hz-8000KHz
• Standby Time (off): about 150 days
• Working Time: about 18 hours
• Battery: 200mAh
• Function: play/pause, answer/hang up/reject the call, volume up/down, previous track/next track