Collar Clip Business Type Bluetooth Single In-Ear Earphone Earbud H107 Bluetooth Retractable Earphone parameters: Bluetooth Version V 4.1 + EDR Bluetooth Profiles HFP, HSP, A2DP, AVRCP Battery Inside 100 mAh Chipset CSR Charging Time 1-2 Hours Working Time 7 Hours Color Black, White, Blue, Gray, Gold Operation Range 10 Meters Sound System Stereo Warranty 14 Months