Battery Life on Box: The authentic Flip 7 box states 16 hours of playtime (14 hours standard + 2 hours via "Playtime Boost"). Fake versions often display "12H".
Charging Ports: Genuine units only have a USB-C port for charging and lossless audio. If the speaker has a standard USB-A slot, an SD/TF card slot, or an auxiliary jack, it is a fake.
Materials: Authentic speakers feature a durable fabric grille and high-quality rubber end caps with semi-transparent accents. Counterfeits often use cheaper, hard plastic instead of rubber.