The card extension support call/answer phones， message， privacy protection， anti-lost alarm and picture functions， convenient to use. <br> <br> <strong>Features:</strong> <br> Extension function， perfect sloving phone problem of single SIM card single standby. <br> Dual SIM card dual standby with phone: convenient to use， you do not need two phones. <br> Support call/answer phones， message， privacy protection， anti-lost alarm， etc. <br> Anti-lost alarm: The range between Card Extension and phone beyond a distance， it will alarm. <br> Picture: One key to control the camera. <br> Mini size with clip， convenient to take along. <br> Only for IOS 7.0 Bluetooth 4.0 Above. <br> <br> <strong>Note:</strong> <br> Before you use it， you must download the APP， and connect the product with Bluetooth. <br> <br> <strong>Specifications:</strong> <br> Compatibility: for IOS 7.0 Bluetooth 4.0 Above phones <br> Material: ABS <br> Color: Silver， Golden (Optional) <br> SIM card: One micro SIM card <br> Range of Bluetooth working: 10m 360° <br> Battery: 400mAh <br> Continuous talk time: ≤3 hours? <br> Standby: 42 hours <br> Product size: ?Approx. 7 * 4.25 * 1.8cm / 2.8 * 1.7 * 0.7in? <br> Product weight: Approx. 28g / 0.98oz <br> Package size: ?Approx. 12 * 9.7 * 4cm/ 4.7 * 3.8 * 1.6in <br> Package weight: Approx. 84g / 2.96oz <br> <br> <strong>Package List:</strong> <br> 1 * Card Extension <br> 1 * USB Cable <br> 1 * User manual (English)