Notes: 1. The mini phone can be directly inserted into the card as a stand-alone mobile phone, and supports the GN standard Nano SIM card . The ordinary mobile phone card needs to be cut into corresponding sizes to be inserted. 2. Please note that the mobile phone is in the insulated state at the factory, so you need to turn the insulation switch to the power-on state, then press the power button to turn on the power. 3. Please allow slight error due to manual measurement. Thanks for your kind understanding. Features: One product = 1 Bluetooth earphone + 1 Mini phone. 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. High-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 life - Maximum 0.283W/KG, about one seventh of the average cell phone(2.1W/KG). Independent speaker with clear sound. Supports MP3 function, a solid choice for music lovers. Compact & Lightweight & Portable. Specification: Type: Mini Bluetooth Phone Model number: BM70 Color: Black, White(Optional) Storage number: 250 Wearing method: Earbud Compatible platform: For IOS / Android Operating Mode: Push-button Communication function: Support BT version: 2.0 Interface: USB 3.0 System: GSM Battery: Built-in 380mAh battery Applicable people: Adults, fashion, business, old people Weight: Approx. 55g Size: Approx. 6 * 2.3 * 1cm / 2.4 * 0.9 * 0.4in Package list: 1 * Phone 1 * USB Cable 1 * Earbud 1 * Ear Hook 1 * User Manual .