It's about time! £110 smartwatch needs charging just once a year and connects to any iPhone or Android mobile

Battery life is consistently listed as a major feature customers want from their gadgets – and it’s such a major sticking point, Apple is even said to have delayed launching its smartwatch to get it right, the Daily Mail reports. 

And while many smartwatches boast a two to seven-day battery life, an Illinois-based site is selling a design that is said to last for an entire year.

It is also almost half the price of Apple’s device, at $179.95 (£110), and connects to any Android or iPhone device.

The No-Charge watch is available from online retailer Hammacher Schlemer.

According to the gadget’s product page, the watch uses one set of batteries for an entire year.

It connects to a range of smartphones using Bluetooth Smart technology.

This uses a fraction of the energy required by older versions of Bluetooth, claims the firm, ‘allowing the batteries to last up to one year and eliminating tedious recharging’.

When someone calls the connected phone, the watch displays the caller ID, and will also reveal the number of missed calls.

Elsewhere, the No-Charge watch shows incoming texts, emails, social media posts, calendar invites and appointments, and the phone’s battery status.

And buttons on the side of the bezel let wearers play or pause music playing on the phone, or take a picture.

The watch has a stainless-steel bezel, scratch-resistant mineral glass, and a rubber strap. It is also water resistant.

Apple is said to be unhappy with its own watch's battery life, and, as a result, the $349 (£216) device is not expected to ship before February.

Most existing smartwatches on the market, such as the Pebble, tend to last up to a week on a single charge.

Samsung’s Galaxy Gear 2 Neo claims to have a six-day battery life, but, in reality, this is closer to four days.

The closest Apple’s chief executive Tim Cook came to talking about the battery life for the watch, during a launch event last month, was saying that users would ‘charge it at night.’

He did, however, spend some time talking about the watch's charging system, which combines Apple’s MagSafe technology with inductive charging.

Smartwatches have grown in popularity this year.

Samsung recently unveiled its Gear S device, the Moto 360 is set to launch later this month, and O2 has announced it is the only

UK mobile network to stock the newly-launched Pebble and Pebble Steel Smartwatches.

The Pebble Smartwatch costs £99 ($99), and the Pebble Steel costs £179.00 ($199).

Both models are also available from retailer Firebox.