Product Description: BM01 Smallest Mobile Phone - 2 in 1 Miniature Cell Phone with Speakerphone and BT Support Miniature Phone: Discover the world's smallest BT miniature cell phone, designed for ultimate portability and convenience. This compact device supports dual SIM Nano cards or one SIM and one memory card (not included), making it a versatile communication tool for users on the go. Music Player and BT: Enjoy your favorite tunes with this fun electronic gadget that doubles as a BT music player. It offers clear voice quality and a strong BT connection, allowing you to stream MP3 music from your smartphone effortlessly. Less Radiation: Prioritize your health with a phone that emits significantly less radiation—only 1/7 of what general smartphones produce. This makes it an ideal choice for protecting pregnant women and babies from signal radiation, giving you peace of mind while staying connected. Band (2G): The BM01 operates on GSM 850/900/1800/1900MHz frequencies, compatible with 2G, 4G, and 5G SIM cards, provided they support 2G GSM frequency. Please ensure your SIM card supports 2G networks if you plan to use this phone as a standalone device, as some carriers have phased out 2G networks. Voice Changer: Add a playful twist to your calls with the built-in voice changer feature, which requires a SIM card. This innovative function brings novelty and excitement to your communication experience, making every call unique and entertaining. Embrace the convenience and fun of the BM01 Smallest Mobile Phone, a perfect blend of functionality and entertainment in a compact design.