No matter the alarm locator is placed on the car, in the children's schoolbag, the elderly's pocket, or valuables bags, you can send mobile phone SMS instructions to the alarm locator via your mobile phone to query the location of the alarm locator. Which is convenient for you to monitor the whole process and grasp the target in real time. s position. Charging input InputAC110-220V50 / 60Hz; Charging output: OutputDC5.0V 300-500mA; Machine battery: 3.7V 400mAh Li-ion battery Standby time: 12 days. Working time 4-6 days; Expansion card; mini TF card(not included); Continuous talk: 150-180 minutes; Network standard: GSM / GPRS Storage temperature: -40 ° C to + 85 ° C Working temperature -20 ° Cto + 55 ° C Humidity range 5% -95% non-condensing GPRS: Upload 60, TCP / IP working voltage: 3.4-4.2V DC standby current :: ≈2.5mA turn on the sound control current: ≈30mA talk current: ≈150mA GSM positioning time: 25 seconds Material: Plastic colour: Black Package Contents: 1 x GPS Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!