Product Description: BM01 Red - The World's Smallest 2-in-1 Miniature Cell Phone with Bluetooth and Dual SIM Miniature Phone: Discover the convenience of the world's smallest Bluetooth miniature cell phone. The BM01 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. Its compact design ensures it fits seamlessly into your lifestyle, providing connectivity without the bulk. Music Player and Bluetooth: This fun and compact electronic gadget doubles as a Bluetooth music player. Enjoy clear voice quality and a strong Bluetooth connection, perfect for streaming MP3 music from your smartphone. Whether you're at home or on the move, the BM01 ensures your favorite music is always within reach. Less Radiation: Prioritize your health with a phone that emits significantly less radiation—only 1/7 of what general smartphones produce. This makes the BM01 an ideal choice for protecting pregnant women and babies from signal radiation, allowing you to use it with confidence and peace of mind. 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 compact versatility and fun of the BM01 Red, a perfect blend of functionality and entertainment in a sleek, vibrant design.