Garmin Charge Power Pack Weight-430g ONLY Compatible with Tiagra 4700

ONLY Compatible with Tiagra 4700 when using Tanpan 11 and corresponding 11-speed derailleur

5mm - 92mm T47 Internal bottom bracket shells

light and resilient

SRAM X-SYNC 2 Eagle 1x chainrings provide a high level of performance and durability

Garmin Charge Power Pack Weight-430g ONLY Compatible with Tiagra 4700External battery pack for Edge models Up to 24 hours additional ride time You can charge on the go by connecting the Garmin Charge power pack to any compatible fitness device with an additional cable including wearables and other cycling computers. Just connect the power pack with a USB charging cable so you can stay in the action and get the most out of your activities TECH SPECS