Features: When the wallet and the mobile phone are separated by more than the effective connection distance of the product (the Bluetooth-compatible connection distance is generally 5-20 meters), the mobile phone and the backpack will automatically alarm to effectively prevent the loss of the mobile phone and the wallet. To use this wallet, you need to download a software called for bseek. The software currently supports Chinese, English, Spanish, and French. It is suitable for domestic and overseas use. Note: Actual color may be slightly different from the image due to different monitor and light effect. Specification: Size: 11.5*9*2cm Material: leather Lining material: polyester Internal structure: 7 card + banknote slot Main Material: Genuine Leather Gender: Unisex Item Height: 2 Item Length: 11.5 Item Weight: 150g Lining Material: Polyester Interior: Card Holder Place Of Origin: China (Mainland)-- includes: 1 x Wallet 1 x Manual