Features:
1) Either nip on the neckline or neckcloth, elegant and simple
2) Phone-in, phone rejection, over and last number re-dial function
3) Incoming call beeps
4) Either for left ear or right with the multi-function button on the cord
5) LED status indicator for different modes of operation
6) Support cellular phones with Bluetooth functionm

Specifications:
1) Technology: Bluetooth CSR V2.0 (compatible with Bluetooth 1.2)
2) Broadcasting range of 10m (no solid obstacle)
3) Frequency band: 2.40GHz ~ 2.48GHz
4) Talk time: Up to 6 hours
5) Standby time: Up to 200 hours
6) Weight: about 20g
7) Battery: Li polymer rechargeable batterym