An Italian blogger got his hands on the anticipated Moto 360 smartwatch from Motorola, disclosing a number of key design details about the Android Wear device on Tuesday, weeks before its official release date.

The gallery of Moto 360 images leaked by Mister Gadget includes a first look at the wireless charger for the Moto 360. The leak also unveils a previously unannounced Moto 360 feature: a heart rate sensor, much like the Gear Live from Samsung Electronics Co. (KRX:005930).

Motorola, which Lenovo Group Ltd. (HKG:0992) agreed to purchase from Google Inc. (NASDAQ:GOOGL) earlier this year, isn't expected to release the Moto 360 until later this month. The company has only given a “summer” timeline for the Moto 360’s release date, and Mister Gadget alluded to a Sept. 1 launch in its report.

moto 360 optical heart rate sensor The Moto 360's heart rate sensor and wireless charger were leaked prior to the watch's release date by Italian blogger Luca Viscardi. Photo:

Luca Viscardi, the writer behind, says in his review that the Moto 360’s wireless charger is sleek, but more difficult to lug around than chargers from its Android Wear competitors. The Moto 360’s Qi charging interface will also allow it to work with wireless chargers like those Google sold with for the Nexus 4 and Nexus 5.

In a brief review, Mister Gadget reports the Moto 360 features longer battery life than the LG G Watch. Viscardi said that the LG G Watch usually lasted him one day of heavy usage, while the Moto 360 usually lasted more than two days. He cautioned, however, that his unit wasn't fully functional, which could have tipped the scales in favor of the Moto 360 during battery tests.

moto 360 vs lg g watch Moto 360 vs. LG G Watch: Motorola's round smartwatch features a comparable size and sleeker look than existing Android Wear models. Photo:

Viscardi compared the Moto 360 to Android Wear smart watches from Samsung and LG, saying its display was brighter and more easily read, despite its better battery life. He said that white colors, shown above, showed the biggest differences in displays.

Viscardi said in his review that the Moto 360's size and weight held up to standard timepieces. He said that the dimensions of the Moto 360, which were criticized for appearing “huge” at some angles, were  “not exaggerated at all.”