The package comes with the headphone set, a 1.5-inches across and 0.5-inch deep Bluetooth transmitter, adapters for several iPod models and a dual cable charger unit for both the transmitter and the headphone set. The neckband is made from a flexible spring-steel wire wrapped in silicone which prevents breaking – a common issue to plastic neckbands and headbands in normal headphones. Transparent silicone bands also attach the headphone to the user’s ears.

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Figure 2: The Bluetooth transmitter and adapters.

Logitech provides eight adapters – for 5th Gen (30/60 GB models), 4th Gen (20/40 GB models), mini and nano iPods, plus Microsoft Zune and a generic MP3 player – to ensure a better fit for the Bluetooth transmitter. The adapter is not required but it does provide a snug fit making the unit and the iPod a single gadget. We tested it with our battle-weary iPod mini and fit perfectly. Logitech deserves praise to support an iPod model Apple has long since abandoned. Unfortunately, due to its size, our 2nd Gen iPod shuffle didn’t get an adapter. Even though it was not a perfect match, we’ve got no problem connecting the transmitter to such a tiny MP3 player.

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Figure 3: Bluetooth transmitter plugged to iPod shuffle and mini.

Non-removable rechargeable lithium-ion batteries power the headphones and the transmitter. The dual cable charger gets the job done for both of them in 2.5 hours. We tested the FreePulse for several days, listening to music while commuting, going to the supermarket and hanging around malls without ever considering a recharge. The manual says the batteries are good for six hours of continuous play.

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Figure 4: The charger.