Earphone Fineblue W688 Wireless silverSpecifications:Bluetooth version: V4.1Solution: ISSCFrequency range: 2.402GHz-2.480GHzTransmission distance: 10MProfile: A2DP, AVRCP, HSP, HFPLi-ion Battery: 110 mAhCharging time: 1-2HTalking time: about 7HPlaying time: about 6HStandby time: about 120HWorking voltage: 3.2V-4.1VFeatures: 1 Bluetooth receiver, wired to wireless.2. Tightly Clip-On designed, easily and conveniently.3. Larger battery with longer working time.4.Vibration alert & Caller’s ID number prompt.5.Compatible with most smartphones with bluetooth.
