* Feature- Intelligent mechanism for wallet-loss prevention- Applicable to any types of wallets- 2 CDS sensors used- No warning when the wallet is used, but a warning is issued when the wallet is about to be lost by someone or inattention- Easily attached to a wallet or passport using its clip- Battery is regularly replaced for semi-permanent service life* Specifications- Description: Intelligent warning device using 2 CDS sensors - Type: Clip - Control Mode: 8-bit micom control- Warning Mode: Magnetic Buzzer - Response Time: Within 0.3 second- Power Consumption: About 15§Ë/hour (Serviceable over 3 months)- Power: 3V(2016 coin cell used)- Weight: 10g