Wrist EF-1 bluetooth bracelet LED time show Vibrating phone call handsfree Smart Watch with Speaker Microphone

A: Caller’s name and number display (name and number)

B: Unconnection warning after 5-10M(vibration warning)

C: incoming vibration for alert 

D: answer/conversation/hangup

E：Earphone support.

F: MP3 play support.

G: synchronization Telephone's contacts

H: time display

I:compatible to Bluetooth 2.1 (standard)

J:Class 2 standard (10 meters)

K:Working Frequency: 2.4GHz

L:workable distance 5-10M