Elenco Snap Circuits Components: The Power, Radio, & Sound Pack (FM Block, Speaker, Battery Packs, & Probe) Up for resale is a complete Elenco Power, Radio & Sound Pack. Perfect as a replacement set, an upgrade for your existing kits, or for custom STEM/electronic hobby projects. All core components are included and in great cosmetic condition. What’s Included: 1x FM Block (Radio tuner module) 1x Speaker Block (Audio output) 1x Probe (For circuit testing and signal routing) Battery Packs (Power supply blocks) Snap wire black Snap-Together Electrical Components Snap Circuits SC-300 / SC-500 / SC-750 Snap Circuits Pro Snap Circuits Extreme STEM toy, electronic learning toy, circuit builder