The Pebble watch family comprises of multiple generations of hardware, each with unique sets of features and capabilities. Developers wishing to reach the maximum number of users will want to account for these differences when developing their apps.
The table below details the differences between hardware platforms:
| Company | Pebble Technology Corporation | Core Devices | ||||
|---|---|---|---|---|---|---|
| Model | Classic, Steel |
Time, Time Steel |
Time Round | Pebble 2 | Pebble 2 Duo | Pebble Time 2* |
| Platform | Aplite | Basalt | Chalk | Diorite | TBD | TBD |
| SOC | STMicro STM32F205RE | STMicro STM32F411 | Nordic nRF52840 | SiFli SF32LB52J | ||
| CPU | Cortex-M3 64 MHz |
Cortex-M4 100 MHz |
Cortex-M4 64 MHz |
Cortex-M33 240 MHz |
||
| Max Resource Size | 96k | 256k | ||||
| Max App Size (code + heap) | 24k | 64k | ||||
| Display Shape | Rectangle | Round | Rectangle | |||
| Display Size | 1.26" | 1.25" | 1" | 1.26" | 1.5" | |
| Display Resolution | 144 x 168 | 180 x 180 | 144 x 168 | 200 x 228 | ||
| Display PPI | 175 | 182 | 175 | 202 | ||
| Display Colors | 2 (B/W) |
64 (Color) |
2 (B/W) |
64 (Color) |
||
| Touch Screen | No | Yes | ||||
| Backlight | White LED | Multicolor RGB LED |
||||
| Heart Rate Monitor | No | No (possible with smartstrap) |
Yes (except SE model) |
No | Yes | |
| Microphone | No | Yes | Yes (with 2nd Mic for ENC*1) |
|||
| Speaker | No | Yes | ||||
| Sensors | Accelerometer, Compass | Accelerometer | 6-axis IMU, Compass, Barometer | 6-axis IMU, Compass | ||
| Buttons | 4 | |||||
| Vibration | ERM (eccentric rotating mass) | LRA (linear resonant actuator) | ||||
| Case Material | Polycarbonate (P, PT) Stainless Steel 316 (PS, PTS) |
Stainless Steel 316 | Polycarbonate | Stainless Steel 316 | ||
| Lens Material | Polycarbonate | Gorilla Glass (curved) |
Gorilla Glass (flat) |
Hardened Glass (flat) |
||
| Charging Port | Power only | Smart accessory port | Smart accessory port (data only) |
Power only | ||
| Battery Life | ~7 days | ~2 days | ~7 days | ~30 days | ||
| Water Resistance | 5 ATM*2 (50 m) |
3 ATM*2 (30 m) |
None (Splash Resistant) |
3 ATM*2 (30 m) |
TBD (target IPX8) |
|
| Model | Classic, Steel |
Time, Time Steel |
Time Round | Pebble 2 | Pebble 2 Duo | Pebble Time 2* |
*1 ENC = Environmental Noise Cancellation
*2 Please note regarding water resistance:
See Available Defines and Macros for a complete list of compile-time defines available.
NOTE: We'll be updating the "Building for Every Pebble Guide" and "Available Defines and Macros" list when we release the first preview version of SDK 4.0.