1. Silicone strap for Fitbit Alta Wrist Replacement Band Smart Watch Fitness Strap Accessory (Flower-012) (Click Link to Check Price on Amazon)
Editor's Rating : 9.9 out of 10
Replacement band compitable with Fitbit Alta.Unique fully and high quality band for your tracker.

2. Fitbit Alta Fitness Tracker, Silver/Black, Small (Click Link to Check Price on Amazon)
Editor's Rating : 9.1 out of 10
Alta syncs automatically and wirelessly to computers and 200+ leading iOS, Android and Windows devices using Bluetooth 4.0 wireless technology. Syncing to computers requires Internet connection and USB port. Syncing to mobile devices requires Bluetooth and Internet connection. Syncing range: 20 feetWater Resistance: Alta is sweat, rain, splash proof. You can wear Alta in the shower, but we recommend rinsing and drying it afterwards because it's best for your skin if the band stays clean and dry. Battery life: lasts up to 5 days. Radio transceiver: Bluetooth 4.0

3. Fitbit Alta Fitness Tracker, Silver/Black, Large (Click Link to Check Price on Amazon)
Editor's Rating : 9.2 out of 10
Alta syncs automatically and wirelessly to computers and 200+ leading iOS, Android and Windows devices using Bluetooth 4.0 wireless technology. Syncing to computers requires Internet connection and USB port. Syncing to mobile devices requires Bluetooth and Internet connection. Syncing range: 20 feetWater Resistance: Alta is sweat, rain, splash proof. You can wear Alta in the shower, but we recommend rinsing and drying it afterwards because it's best for your skin if the band stays clean and dry. Battery life: lasts up to 5 days. Radio transceiver: Bluetooth 4.0

4. Fitness Tracker, MoreFit Alta Touch Screen Activity Health Tracker Wearable Pedometer Smart Wristband, Silver/Blush (Click Link to Check Price on Amazon)
Editor's Rating : 9 out of 10
✔ See your daily activity and time with a bright LED tap display✔ Automatically track how long and how well you sleep and set a silent vibrating alarm

5. Fitbit Alta (HR) Bands, No1seller Magnetic Milanese Loop Stainless Steel Magnet Closure Lock Bracelet Strap Band Watch Band For Fitbit Alta and Fitbit Alta HR Fitness Tracker (Click Link to Check Price on Amazon)
Editor's Rating : 9.8 out of 10
Personalized Your Fitbit Alta and Fitbit Alta HR Fitness Tracker, fits wrist length scope 5.5"-9.3" (140mm-237mm).Please Note: band replacement Only, No tracker, No metal frameMilanese bracelet loop with magnetic clasp could be installed very easy and convenient, no need additional tool.