And a comfortable black rubberstrap feels secure on the wrist.
及舒适的黑色橡胶表带在手腕上感觉安全。
2
Other features include a black rubberstrap, scratch-resistant sapphire crystal, and water resistance to 30 meters (99 feet).
其他功能还包括一个黑色橡胶表带，防刮蓝宝石水晶，30米(99英尺)和耐水性。
3
The device, which consists of two conductors fastened to the head by a rubberstrap, significantly boosted results in a simple arithmetic test, they said.