The Iridium GO! 500 Minutes/12 Month Prepaid Voucher includes the following:
Expiry period: 12 months
Units per voucher: 500 minutes
Activation fees: Free
This Prepaid 500-minute (30,000 unit) SIM card lasts one year from the date of activation. Any unused minutes at the end of the year can be carried over for up to two additional years with the purchase of time extensions. Time extensions are available in blocks of 6 months at $55 per month ($330). Prepaid SIM Cards will expire after three years at which point any unused minutes will automatically be lost.