Avantree MULTIPOINT Bluetooth V4.0 Hands-Free Visor Car Kit, Support GPS, Music, Wireless in Car Handsfree Speakerphone Compatible with iPhone, Samsung Smartphones MULTI-POINT HANDSFREE: Combining convenience with safety, this bluetooth handsfree car kit can connect with 2 mobile phones simultaneously. 22 HOURS OF TALK TIME:Built-in rechargeable Nokia battery - easily user replaceable. Provides for up to 22 hours of talk time, and an incredible 216 hours (9 days) of standby time!Great for long road trips. EASY TO USE:Easy to use right out of the box with very simple installation. Just attach onto your car's sun visor and away you go! UNIVERSAL COMPATIBILITY:Works with any bluetooth-enabled devices, including iPhone, Android smartphones, tablets, iPad, laptop, MP3 players, etc. HIGH-QUALITY AUDIO: Always hear your conversations clearly, thanks to the echo and background noise reduction feature. (Not recommended for use in trucks.) Compatible with all Bluetooth enabled phones Put phone on holder for better sound Not compatible with GPS navigators: Not compatible with smart watches Not recommended for use in trucks (due to cab dimensions and noise) Not recommended for music, ideal for conversation and the sound quality can&#039;t be compare with your car stereo Bluetooth compliance: Bluetooth V4.0 Operation range: Class 2, 10 meters Support profiles: A2DP,AVRCP,HSP,HFP Talk time: Up to 22 hours Standby time: Up to 600 hours Battery charging time: 2 - 3 hours Charger voltage: DC5.0V, 500mA Battery: 650mAh rechargeable lithium-ion battery Size: 123*46*20mm Weight: 73g Avantree 10BP Bluetooth car kit USB car charger Micro USB charging cable User manual Sun visor clip Rechargeable lithium-ion battery