【Mic & Voice Recording】 This Outdoor Roof Advertising Speaker with Bluetooth Amplifier includes a microphone to amplify your voice with built-in recording and playback functions. It ensures your messages or announcements are delivered with maximum clarity across any environment. 【Superior Audio Performance】 This Car Advertising Audio device lets you experience high-fidelity sound output driven by a powerful speaker unit. It delivers clear audibility and excellent sound projection from a distance, making it ideal for outdoor and busy settings. 【Multifunctional Audio Input】 Supports USB and TF card inputs along with recording playback and a music alarm. Equipped with a built-in Bluetooth 5.2 module, it offers seamless and stable wireless connectivity to your devices. 【Secure Magnetic Mount】 Features strong integrated magnets for rock-solid attachment. The durable material construction and reinforced footplates ensure the speaker remains securely in place, even during sudden stops or rough rides. 【Versatile Vehicle Utility】 Designed with a compact profile that fits a wide variety of vehicles. It is perfectly suited for trucks, SUVs, sedans, compact cars.