Multi-Functional Phone Bluetooth answer and dialing, message reminding(NOT for iPhones), music playing, and can be used as a bluetooth dialer for your smart phone, can also be used independently when it inserts a Nano SIM card. Ultra-long Standby TimeHigh-capacity polymer lithium battery, standby time can be up to 7 days, and usage time can be up to 3 days. It can also provide 240 minutes persistent call duration and 2 hours music playing. Low radiation for a Healthy LifeMaximum 0.283W/KG, about one seventh of the average cell phone(2.1W/KG). ProfessionalIndependent speaker with clear sound.Supports MP3 function, a solid choice for music lovers. TipOne product = 1 Bluetooth earphone + 1 Mini phone.Compact & Lightweight & Portable.Any questions,Please feel free contact us,we will provide you with high quality after-sales service.