Two-way speaker/controller hooks onto your car sun visor for easy conversatin’. Goes to standby when you leave the car, wakes up when you return. Pair with up to 8 devices, and use up to 2 at the same time. Check out this battery life: 32 hours talk time, 66 days on standby, 2 years asleep. Model: VBC-001, VBC-002 (a pleasant reminder of that Austin Powers song).
Compare on Amazon at $51!