【Brand and Model】 The Suunto D4 is a high-performance dive computer specifically designed for diving and snorkeling. 【Design and Materials】 The black silicone band is durable and provides a comfortable fit. The digital display offers excellent visibility. 【Functionality】 It functions as a dive computer, accurately recording data during dives. It's an essential item for marine sports enthusiasts. - Brand: Suunto - Model: D4 - Color: Black - Material: Silicone band - Function: Dive computer - Display Type: Digital Approximately 30 dives. Battery replaced one year ago. Warranty and instruction manual are not included. You can download the instruction manual from the Suunto website. Thank you for viewing.