FAQ

  1. How long will the battery last? — The battery will last about two years for average users. Actual Battery life varies with usage and environmental conditions.
  2. How do you replace the battery? — Unscrew the tiny screws, remove the lid and use your finger to carefully slide out the old battery. We also provide a battery replacement kit specifically for your Jayster.
  3. How will I know if the battery is low? — When the app and Jayster are connected, the battery bar in the upper right will indicate how much battery is left. If it reaches a critical level a message will pop up requesting the user to change the battery.
  4. Will the device work with my phone? — Maybe. Devices supported: iPhone 4s, iPhone 5, iPhone 5c, iPad w/ retina display, iPad mini, and Android-powered Bluetooth Smart Ready devices running the latest 4.3 OS.
  5. What is the range? — We estimate the app will track missing keys within 50ft. Even though Bluetooth Smart has a range of 150ft., the actual range fluctuates due to barriers such as magnetic frequency, metal objects, or other obstructions that can weaken or block signal strength. Also some phone manufactures may limit a phone’s Bluetooth reception range to avoid draining the phone’s battery.
  6. Where can I find the App for Jayster? –Search for the keyword “Jayster” in their respective device App store.

Product Details


Alarm mode: Sound an alarm to help find missing keys.

Find mode:  You’re getting warmer! Includes a hot/cold sensor that indicates distance to the device.

Nest mode: If your phone and keychain separate beyond approximately 15 feet an alarm will sound. Use this feature in restaurants or at work to prevent you from leaving valuables behind.


iOS devices: iPhone 4S, iPhone 5C, iPhone 5S, iPod Tough 5th gen, iPad 3rd and 4th gen, iPad mini. iOS compatibility: iOS 7 or later
Android devices: Any Android-powered device with Bluetooth Smart Ready (BLE 4.0) running the latest 4.3 OS.


Replaceable battery: Model CR2450 Lithium Coin Battery, (avg. battery life: 18 months)


Wireless technology: Bluetooth® 4.0 / Bluetooth Smart
Range: 0-50 ft. (Bluetooth signal can reach 150 ft. – 50 ft. limitation is embedded in most iOS and Android devices )
Sound Pressure Level: 85 dB
Size: 32.5 mm (H) x 30 mm (W) x 9 mm (D)

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