The device was powered by a replaceable battery with ten years of expected life.
Usually the electricity is provided by a replaceable battery.
The vast majority of tablets do not even have a replaceable battery.
Nice to have a clean interface without manufacturer clutter and a replaceable battery.
Battery life: Acoustic releases are generally powered by rechargeable or replaceable batteries.
Don't make it hard on yourself by having a worn-out set of replaceable batteries, or a rundown rechargeable battery.
All four I am referring to have replaceable batteries - an improvement on earlier models.
The biggest advance was the change from a permanent to a replaceable battery, which resulted in the ferret collar-transmitter as we now know it.
The expansion cards were backed up by a replaceable battery, which last approximately two years.
Most also cannot have replaceable batteries and only last up to 5 years before having to be replaced - so there is additional cost.