ooono traffic alarm: Warns about speed cameras and hazards in road traffic in real time, automatically active after connection to smartphone via Bluetooth, data from Blitzer.de : Amazon.de: Electronics & Photo
CR2450L Button Cell Pack of 5 for Ooono and More - CR 2450 3V Button Cells Leak-Proof & Long Shelf Life - CR 2450L Batteries, Compatible with CR2450 Button Cells, Battery 2450,
1 x CR2450 Wilhelm Lithium Button Cell 3 V 600 mAh Diameter 24.5 x 5.0 mm Battery DL 2450: Amazon.de: Electronics & Photo
Verbatim Premium Lithium Button Cells CR2450 Pack of 4 3 V 580 mAh Lithium Coin Cell Batteries for Watch Car Key Remote Control Camera Toy etc. Button Battery Lithium Battery: Amazon.de: Electronics
CR2450L Knopfzelle 5er Pack für OOONO u.v.m - CR 2450 3V Knopfzellen auslaufsicher & mit Langer Haltbarkeit - CR 2450L Batterien, Kompatibel mit Knopfzellen CR2450, Batterie 2450, 2450 Batterie: Amazon.de: Elektronik & Foto