... .1 year warranty 3.Fast delivery 4.Portable bluetooth headset Bluetooth Headset:1) General radio: carrier frequency:2 ... .4-2.480GHz2) Radio performance: Bluetooth class 2, up to 5-10 meters(in open ... phone model, battery power, and environment factors)3) Bluetooth profile supported: HSP1.1 profile(headset profile), HSP1. ... the Country in the shipping address Bluetooth Wireless Headset