Feature: 1. UNLOCK 2G GSM MINIATURE PHONE: The smallest Bluetooth miniature phone. Supports dual SIM Nano cards (or one SIM + one small memory card) (not included). 2. MUSIC PLAYER AND BLUETOOTH: A compact and fun electronic gadget that can be a Bluetooth music player. Provides very clear voice and high Bluetooth connection for MP3 music player smartphones and tablets. 3. LOW RADIATION: Radiation rate is only 1/7 lower than regular smartphones, making it the best phone to protect pregnant women and babies from signal radiation. 4. BAND (2G): GSM 850/900/1800/1900MHz (2G, 4G, 5G SIM cards can be used, but must support 2G GSM frequency). Some SIM card operators have already cut off 2G networks, so make sure your SIM card supports 2G networks when used as a standalone phone. 5. VOICE CHANGER FEATURE: Have fun during calls with the voice changer feature, allowing you to alter your voice for a unique and entertaining conversation experience (SIM card required for this feature). Specification: Item Type: Smallest Mobile Phone Material: ABS Frequency Band: GSM 2G 850/900/1800/1900MHz Display Screen: 0.66 inch OLED / 64x48 Standby Time: Approx. 72 hours Built in Battery: Lithium ion Battery 380mAh Support Multiple Languages: Multiple Languages Small Memory Card: Maximum support 64GB (not included) SIM Card: Standard SIM Card (not included). Package List: 1 x Phone 1 x Charging Cable 1 x User Manual