As one of its daily deals, PricePlunge offers the Scosche solCHAT II Bluetooth Solar-Powered Hands-Free Speakerphone, model no. CBHSOL2, for $16.99 plus $3.99 for shipping. That's the lowest total price we could find by $8. It's compatible with most smartphones and features voice-announced caller ID and one-touch voice-dialing. Deal ends today.