Fitbit Zip ... a tiny, belt-clip step counter that worked with Bluetooth and had a 30 day battery life. I don't want to wear a watch or ring or rely on my phone

Fitbit Zip ... a tiny, belt-clip step counter that worked with Bluetooth and had a 30 day battery life. I don't want to wear a watch or ring or rely on my phone and I don't want to constantly charge another device, but I still want to count steps.