Specification:These earphones can be used with any Bluetooth Smart phone,Website: , tablet, Laptop, Desktop... for Iphone, for Samsung, for HTC, for LG, and all other Phone models are can be used without any issue. This is not a brand name Bluetooth Headset, it is universal Bluetooth Headset.-Bluetooth Version: V4.1-Sound Mode: Stereo-Chip: CSR8645-Charging time: 2 Hours-Standby time:120 Hours-Talk/Playing time:5 hours-Operation distance:10 Meters-Connect 2 phones: Yes-Bluetooth Profile: HFP 1.6, HSP1.2, AVRCP 1.4, A2DP1.2-Noise Reduction: CVC6.0-Power Source: Built in Rechargeable Battery-Size: 40 X 23 X 32m-Weight 16g-Color: Any Color-With CSR4.1 APT-X audio decode Technology, offering you perfect sound-Sweatproof design-Make every drop of sweat count with the fear of damaging your headset-Built in 85 mA battery, long standby and talking time-Up to 5 hours of talk time and 120 hours of standby-Crystal HD clear sound quality-Noise isolating in-ear design-Pair two phones to your earphones at the same time-Answers phone calls anytime anywhere-CVC6.0 intelligent noise reduction-Control Music and calls from the headphone-Suitable for all bluetooth enabled devices-Hands Free Made easy to keep your hands on the wheel and eyes on the roadProduct specifications:Function:-Volume up-Volume down-Playback/Previous-Lowe Battery Warning-Answer/End/Reject Call-Transfer call voice-Connect 2 devices at same time-Transfer calls between 2 mobile phones-Replay the phone-Mute-Default setting-Turn off voice notifications-Turn on voice notification