TenFifteen F3
Design
The design of the TenFifteen F3 is a mix of outdoor and sports smartwatch. With a thickness of 15.6 mm, the deep black watch case appears anything but subtle. The pronounced thickness can be explained by the fact that the manufacturer has not integrated all antennas (GPS / WiFi) into the watch strap, but rather accommodated them directly in the housing of the smartwatch. Thus, the watch strap can be exchanged as desired. The watch strap, which is already on the smartwatch, is made of silicone, is adjustable in size and is closed with a pin buckle.
According to protection class IP67, the smartwatch is dustproof and protected against temporary submersion. Although the manufacturer advertises that you can swim with the smartwatch, it is not recommended. Temporary submersion means protection against penetrating water at a depth of a maximum of one meter for a maximum of 30 minutes. The movements caused by swimming cause a change in the water pressure, which is currently not taken into account by the IP certification!
A striking design feature are a total of 4 control buttons on the watch case. Various functions can be triggered at the push of a button. Above each of these control buttons there is a bold lettering that explains the respective function (COMP, HEALTH, START, BACK). The TenFifteen F3 does not have a removable back, as is often found on smartwatches from China. Instead, the SIM card is inserted through a SIM slot on the edge of the housing. The 4-pin charging connector and heart rate sensor are also located on the back.
Display
The smartwatch is based on a circular, 1.39 inch OLED display. The display resolution is 400 x 400 pixels. The resulting point density is a sharp 286 PPI. In contrast to LCD panels, OLED panels do not have any background lighting. Each individual pixel lights up by itself and can be switched off if necessary. This results in a particularly rich black level and (mostly) lower energy consumption.
Processor and memory
The processor of the TenFifteen F3 is the MediaTek MTK90 used by 6580% of current smartwatches from China. This is a quad-core processor whose Cortex-A7 cores clock with up to 1.3 GHz. The main memory of only 1GB is a bit smaller than is the case with comparable and recently released models (mostly 2GB), but experience has shown that it is sufficient for largely smooth multitasking. The internal flash memory has a size of 16GB. An additional expansion of the internal memory using an SD memory card is not possible. The system is powered by a 550 mAh battery, which makes a running time of 1 to 1 1/2 days seem realistic.
Native Android and features
Instead of a proprietary operating system, TenFifteen relies on an open Android 5.1. The user interface has been adapted accordingly to match the circular display of the TenFifteen F3. Apps can be downloaded and installed directly via the pre-installed Google PlayStore. An additional connection to a mobile device is not necessary because the smartwatch has its own WiFi module. Seen in this way, the F3 is a “smartphone for the wrist”.
Among other things, it is possible to make calls and surf the web (2G and 3G) with the smartwatch via the insertable SIM card or to forward calls via Bluetooth (V4.0) from the connected mobile device to the watch, to receive notifications, or via the integrated GPS module to navigate. Sports functions are of course also available. The TenFifteen F3 has a step counter that records data on the movement sequence, as well as a heart rate sensor that monitors the heart rate. Various sports programs are available. The smartwatch can also be used as a sleep monitor. Music can be streamed and controlled from the mobile device to the smartwatch via Bluetooth.
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Smartwatches from China have seen little progress in the past few months. Many of the most recently released models, including the TenFifteen F3, continue to rely on a now older MediaTek processor equipment, which certainly fulfills its purpose, but has remained on the spot, especially with regard to Android OS. Android has meanwhile reached version 8, which is why the Android 5.1 used here is definitely out of date. If you currently decide on a smartwatch from China, it is advisable to make your choice purely based on the design and the support within the smartwatch community, because at least in terms of hardware and software, many of the models that can be found under different names have hardly any differences worth mentioning .
