A small gadget shaped like a USB flash drive. Hide it, and it chirps, buzzes and plays sounds at random until someone finds it. Rechargeable, designed and assembled in the USA.

How it works

Ships switched off. Plug it in once to wake and charge it (red: charging, green: full).
Set it with the plug. No buttons or app: quick plug-in sequences pick the sound and how often it plays.
Hide it. It starts about an hour after unplugging, then plays at random gaps.
To quiet it, plug it into a USB wall charger. Four quick plugs switch it off completely.

Step-by-step instructions, with diagrams: embeddedera.com/cricket. The QR code on every Cricket opens the same page.

Settings, troubleshooting and battery safety: docs.embeddedera.com/cricket.

Specifications

Sounds	Chaos (animal voices, effects, tunes, buzzing), Field cricket, Snowy tree cricket, House cricket, Katydid
Average gap between sounds	15 min, 45 min, 2 h or 4 h
Battery	3.7 V, 100 mAh lithium-polymer, rechargeable, installed
Charging	Standard 5 V USB-A charger or computer port
USB	Power and control only. It cannot store files and a computer does not see it.
Hardware	Cricket 008, piezo speaker and vibration motor, no buttons

Cricket sounds stay quiet below 55 °F (13 °C). The image is a render of our own CAD design.

Battery and safety

Contains a lithium-polymer battery. Charge only from a standard 5 V USB-A charger or port; do not use it if it is swollen, damaged or hot. Ships by ground within the contiguous US. Not a toy: keep it away from young children and pets, and prank kindly.

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Cricket — USB-A Sound Prank Device