1.Compatible Bluetooth specification:V2.1+EDR 2.Standby time:600hours 3.Working sistance:up to 10 meters 4.Talk time 8-10hour

Product Features:1,Compatible Bluetooth Specification V2.1+EDR 2,Operating Frequency Band: 2.4GHz ~ 2.48GHz unlicensed ISM band 3,Class 2 Output Power up to 10 meters 4,Support Headset and HandsFree profiles 5,Support Multiple paired,allows a speakerphone connect to two phones.      (Memory Up to 8 Bluetooth Phone paired) 6,Integrated with echo cancellation and Noise suppressor 7,Built in speaker and microphone 8,Battery type: Rechargeable Lithium DC 3.7V, 650maH (BL-5B) 9,Talk time: up to 15~16hours 10,Standby time: up to 1000 hours       Charger time: 2~3hours 11,Pieces Per Carton: 40 pcs / ctn       Size: 118mm x 46mm x 16mm       Box Dimension : 450mm X 270mm X 320mm 

• Packing details:Qty per carton: 40PCS/ctn N.W: 8.0 kg / ctn G.W: 9.0 kg / ctn Carton size: 41.5 X 34.0 X 27.0 cm