This is a SIM card suitable for any unlocked BGAN terminal such as those manufactured by AddValue /Wideye, Cobham, Hughes and Thrane and Thrane. The SIM card may not work in your terminal if it is locked to a particular provider so we suggest you check this before purchasing a SIM card from us. Alternatively, you may wish to purchase the 25 unit prepaid SIM which will enable you to test if your terminal is unlocked. Please note that refunds are not available on prepaid airtime. This SIM card includes 500 units valid for 2 years.Inmarsat BGAN Prepaid SIM Card- 500 units (55 MB*), valid for 24 Months. *Rounded to nearest 0.5MB. Minimum call duration is 0.098 MB with increments of 0.0196MB thereafter. All pre-paid airtime options are valid for 2 years. Your prepaid BGAN airtime purchase will include low-balance alerts, automated top-ups and historic traffic reports if requested. We cannot guarantee that Inmarsat will offer a 2 year validity period on future purchases of airtime added to this SIM card. Prepaid BGAN airtime offers units which burn at the following rates: Service Units Required Background IP per MB 9.1 Calls to Landlines 1 Calls to Mobiles 1.2 SMS 0.5 Prepaid burn rates for other BGAN services available on request. SIM cards are sent inactive and the 2 year validity period starts from the date you request activation. All SIM card purchases are subject to our standard terms and conditions which can be found on our website.