Metal rod in-ear wireless headphones

Product size: 1.5cm*2.3cm
Charging box size: 11cm*3.3cm
Weight: 4 grams (excluding the weight of the charging box)
Color: Obsidian Black, Haoxue Silver, Tyrant Gold, Rose Gold, Wine Red
Bluetooth solution: V5.0
Support protocol: HSP/HFP/A2DP/AVRCP
Operating distance: 10M
Talk time: 3-4 hours
Music playback time: 3-4 hours
Battery type: polymer lithium battery
Battery voltage: 3.7V
Headphone battery capacity: 50mAh
Charging box battery capacity: 550mAh
Headphone charging time: 40-50 minutes
Sensitivity: 120±5db
Frequency response: 20-20000HZ
Impedance: 32Ω