Amazon.com: Gomadic Hot Sync and Charge Straight USB Cable for The Garmin etrex 10 20 30 – Charge and Data Sync with The Same Cable. Built TipExchange Technology : Electronics
Amazon.com: Hard Carrying Case Replacement for Garmin eTrex 20/20x/30x/22x/32x Handheld GPS by Aenllosi (Grey Zipper) : Electronics
Amazon.com: Gomadic Portable AA Battery Pack Designed for The Garmin etrex 10 20 30 - Powered by 4 X AA Batteries to Provide Emergency Charge. Built Using TipExchange Technology : Electronics