Material: ABS with rubber oil
TWS Connection function
Bluetooth Connection 4.2
Hands-free callSupport TF Card
Speaker: 3 w * 1
Frequeancy Response: 20Hz-20Khz       
Working Time: up to 4 hours
Charge Time:1 hours
Signal to noise ratio: 85 db
Battery capacity : Built in battery 400mah
Product color:  multi-color is optional
Product size: 13×9×6cm