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F4 Key Finder

The key finder F4 is a smart and tiny tracking device.
It is developed based on a new kind of Bluetooth radio system.
The F4 not only help you to find your stuff where it is, but also help you to keep your stuff never lose again.
It is easy to be attached to your wallets, bags, car keys, remotes and other stuff.


Find & anti-lost function

LED and buzzer indication

Replaceable coin battery

Ultra-low power consumption chipset nRF52 series with ARM core

External ON/OFF push button to save the battery lifetime

Easy to print a customization Logo/branding on the case

Ultra thin Portable device, keychain and neck string available for Optional


Item Value
Case Color White
Battery Model CR2032
Operation Voltage 1.8-3.6V
TransmissionCircuit 10.5mA (Max.)
TransmissionRange 30 meters
Antenna 50ohm
Net Weight 9.0g
Buzzer 90db
Size 37 x 37x 5.8 mm

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